Hcg levels and multiples

My HCG levels 14 days after a frozen embryo transfer was 3700 !!! I had three 5-day embryos transferred and I had just turned 43 yrs when my eggs were retrieved so it is extremely unlikely that I could be carrying twins or triplets due to the high rate of abnormal embryos in my age group.

An hCG level of less than 5 mIU/mL is considered negative for pregnancy, and anything above 25 mIU/mL is considered positive for pregnancy. An hCG level between 6 and 24 mIU/mL is considered a grey area, and you’ll likely need to be retested to see if your levels rise to confirm a pregnancy. The hCG hormone is measured in milli-international ... Dec 15, 2022 · The chart below provides median hCG levels, but also a range. As you can see, the range varies significantly: The range for singletons is 5 – 397 and for twins it is 48 – 683. As you can see, there is a big overlap between the first hCG level in singleton and twins. What this means is that even if you have a first hCG level of 397, it could ... High levels of HCG in the first trimester could be one of the first signs of twin pregnancy. Women who have taken fertility drugs are often at a higher risk for having multiple births . Doctors will watch HCG levels closely and listen for two heartbeats if they suspect more than one baby is gestating.I don't have my first hCG level, but I think it was around 150 on about 12DPO, up to 408 on about 14DPO, and up to 17491 on about day 23DPO (I know the dates of the tests, but exact ovulation date is an educated guess). They did check progesterone, but I never actually found out what that level was. I was already on Crinone, so I'm not sure if ...Levels of hCG in your blood don’t provide a diagnosis of anything. They can only suggest that there are issues to look into. hCG levels and multiple pregnancies. One of the ways of diagnosing a multiple pregnancy is by testing your hCG levels. A high level may indicate you are carrying multiple babies, but it can also be caused by other factors.5 weeks exactly today and got my blood work back. 14dpo- 232. 16dpo (4weeks)- 483. 23dpo (5 weeks)-7906 ???? If hcg doubles every 48+ hours the numbers are way higher than I was expecting! We had an IUI and I had 3 viable eggs and I’m super nervous it’s going to be a multiple pregnancy.The high level of hCG hormone confuses the pregnancy tests. Fertility drugs and other medications with hCG can also raise levels of this hormone. This might mess up your pregnancy test results.

Feb 7, 2022 · I took a pregnancy test on Feb 2nd and it said I was pregnant. I last started my period on December 31st for 4 days.  Twins runs in my family. I was taking a prenatal vitamin with choline for 2 months. Now just the prenatal and folic acid. I got blood work drawn on Feb 3rd. my hcg levels were 4,798.0... Mar 18, 2023 ... Mine went from 467 to 9130 in a week and they say I'm 5 weeks and 6 days is this normal ? 2023-6-20Reply.Human Chorionic Gonadotropin. Human chorionic gonadotropin (hCG) is a hormone produced by the placenta during pregnancy. It helps thicken a person’s uterine lining to support a growing embryo and tells the body to stop menstruation. HCG levels rise after conception and continue to rise until about 10 weeks in pregnancy.Oct 15, 2014 at 5:42 PM. @courtney3334, We all know HCG is not a good indicator of multiples but I definitely still compared my numbers so here you go: 335 at 14dpo, 992 at 17dpo, and 6,812 at 21dpo. I did IUI. Found out it was twins at 6w5d. I will also add that, with DD at 22dpo, I was at 10,000+.The evaluation of women who present with first-trimester pain or vaginal bleeding typically includes measurement of serum levels of beta human chorionic gonadotropin (β-hCG) and transvaginal ultrasonography to determine the likelihood of a viable intrauterine pregnancy. β-hCG levels of 1500 to 2000 milli-international units per …Summary. Researchers have found an association between low levels of the hormone human chorionic gonadotropin (hCG) and pregnancy loss or miscarriage. Sex and gender exist on spectrums. This ...Jul 6, 2022 ... Beta hCG calculator: What if hCG levels are low? · Higher than average hCG levels might indicate that you're having twins or triplets, but you'll&nbs...

Oct 6, 2021 at 7:10 PM. Have had 4 successful FETs. My IVF doctor only takes betas at 10dpt & 20dpt (similar to 15dpo & 25dpo). Hcg doubles faster in the early stages than later. I did have higher hcg with twins. However, I still tested positive on hpt at 4dpt (similar to 9dpo) with all of them.How do twins and multiples affect hCG levels? Women pregnant with twins or multiples have high levels of hCG. This increased level of hCG could also be why some women who carry twins have …At 5 weeks (I’m now 9 weeks 4 days) my HCG levels were almost 10,000. Haven’t had my first ultrasound yet but twins run in my family too. Everyone keeps saying twins but I’m only 18, I don’t think I could handle that just yet . Mine were the same at fine weeks.Mar 11, 2022 ... It helps thicken a person's uterine lining to support a growing embryo and tells the body to stop menstruation. HCG levels rise after conception ...

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Mar 18, 2023 ... Mine went from 467 to 9130 in a week and they say I'm 5 weeks and 6 days is this normal ? 2023-6-20Reply.25–40 weeks. 3,640–117,000 mIU/mL. At around 5 weeks of gestation, the hCG levels for a singleton pregnancy typically range between 18 and 7,340 mIU/ml (milli-International Units per milliliter). The levels of hCG for twins can be higher due to the presence of two embryos. hCG levels at 5 weeks with twins.An hCG level between 6 and 24 ... When there is a question regarding the health of the pregnancy, multiple testings of hCG done a couple of days apart give a more accurate assessment of the situation. The hCG levels should not be used to date a pregnancy since these numbers can vary so widely.It creates an hCG levels chart which allows you to monitor the increase associated with the low, average, and high hCG levels. hCG Levels In Twin Pregnancy. A twin pregnancy cannot be detected from hCG values. The hCG levels rise faster in case of twins, but there isn't much scientific data on this.Feb 26, 2019 ... When you miscarry (and also anytime you give birth), your body no longer produces hCG. Your levels will ultimately go back to 0 mIU/mL. In fact, ...

Take a look at the best construction levels on the market right now, so you can make the best choice for you and your team. Expert Advice On Improving Your Home Videos Latest View ...The most common multiple income streams include salary, side hustle, investments, rental property, and more - all will build real wealth. The College Investor Student Loans, Invest...Barbarella76. Nov 22, 2010 at 9:21 PM. Can you tell me what your HCG levels were at 8-9 weeks with twins? I just got my results from last week, which would have been at 8 weeks 4 days, and my levels were over 288,000. The doctor said I am "heavily pregnant", meaning I am farther along then I thought or I might be carrying multiples.Normally, the amount of hCG should double every 48–72 hours or increase by 60 percent or more every two days. If your hCG levels don’t double, it may indicate a nonviable pregnancy, whether intrauterine or extrauterine. A rapid increase of hCG in the blood can indicate, among other things, twins or triplets.If your doctor orders a blood test to check hCG levels and yours are sky-high, it may be a sign that you have two (or more!) babies on board. Again, that’s not always the case, and you won’t know for sure until that first ultrasound. Keep in mind, though, that there’s sometimes a downside to knowing so soon.Here are some factors one travel journalist considers when choosing between award flight options. Sometimes, the best award flight is the only one available for your destination an...At 13dpo my hcg was 57 and 3 days later was 399 so not a massive rise-definitely didn't suspect twins from it. My Pregesterone numbers were 52.5 at cd22 and remained in high 60s in first weeks of pregnancy. It wasn't until the 7 week ultrasound that we were told-and we were both shocked so you just never know.In one study from 2011, serum β-hCG was measured on day 12 after embryo transfer (ET), day 17 embryo age, and levels higher than 80 IU/mL were found to be associated with positive fetal cardiac activity seen on the ultrasound at 6 weeks gestational age [ 8 ]. Naredic et al. demonstrated that a serum β-hCG level less than 500 IU/L on …

Nov 22, 2021 · Blood tests. Pregnancy blood tests can detect hCG hormone levels as low as 5 to 10 mIU/mL. Urine tests. At-home urine tests require higher levels of hCG to detect a pregnancy, typically at least 20 mIU/mL. If your home pregnancy test is positive, your healthcare provider may offer a blood test to check your hCG levels.

Elevated hCG levels . Higher-than-normal levels of hCG may indicate that you're pregnant with multiples. When you become pregnant, your body starts making human chorionic gonadotropin hormone (hCG ...that doesn't seem high at all to me, actually on the lower range of normal. i was 6+3 with my singleton and hcg was 37000. my hcg this time around was 3188 at 5w0d. but hcg varies from pregnancy to pregnancy and isn't a good indicator. I don't know what it was with my twins 3 years ago, so I dont have anything to compare it too.I don't have my first hCG level, but I think it was around 150 on about 12DPO, up to 408 on about 14DPO, and up to 17491 on about day 23DPO (I know the dates of the tests, but exact ovulation date is an educated guess). They did check progesterone, but I never actually found out what that level was. I was already on Crinone, so I'm not sure if ...You can figure out your Hcg levels by using a hCG levels calculator. Absolute difference / First-hCG level x 100 = Percentage difference. Doubling time = log2 of the duration between tests in hours (First -hCG level / Second -hCG level) 2 (24 / Doubling time in hours) – 1) x 100 = one-day increase.HCG levels are a poor indicator of multiples. The only way to know for sure is to get an ultrasound. d. drankid. @linz6464, ... Had my hcg levels measured at what I thought was7+1 and 7+3 based on the first day of my LMP.Levels were 77,904 and 99,377 respectively. Had them done again at 8 weeks and jumped to 128,252.Went in for a …Early hCG Levels and Twin Possibilities. SHOW MORE. Shopping for Multiples. Baby Registry Essentials for Parents of Twins. Best Double Strollers. ... More than 24,000 people are talking about twins and multiples in our community groups. Follow Along . Jump to Your Week of Pregnancy. Pregnancy Week 1. Pregnancy Week 2. Pregnancy Week 3 ...At my first blood test HCG was 1,876. I was about two weeks pregnant. At 8 weeks we found out we were having twins. At about 8-9 weeks my HCG was 187,293. Hcg is tricky because it can be indicative of multiples, but also can mean molar/ectopic if it’s super high- or just a singleton.Tools. hCG calculator: How to track your hCG levels at home. Beta hCG doubling time calculator and charts. Our hCG calculator will help you make sense of your …HCG production starts right after implantation, but the levels are very low at first. They increase rapidly in the first few weeks, and home pregnancy tests can typically detect hCG in urine once it reaches 25 mIU/mL or higher (although some can detect in at lower levels). This is generally around 12 to 14 days after conception or a couple of days …Health Information on Lyme Disease: MedlinePlus Multiple Languages Collection Characters not displaying correctly on this page? See language display issues. Return to the MedlinePl...

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Multiples of the normal median (MoM) of free βHCG is a valuable parameter in evaluation of risk ... Serum levels of β-hCG and PAPP-A were assessed by immunoˇuorescence techniqueE. Ellealyse. Nov 30, 2023 at 9:48 AM. HCG levels can really be all over the place and an ultrasound is the only way to know for sure if it’s multiples, but I understand being curious! Here were my levels with my twin pregnancy (currently 35 weeks): 4/29 (Sat): 1921 (4 weeks 4 days) 5/2 (Tues): 5687 (5 weeks 0 days)In cycles where hCG levels both doubled and reached 100 mIU/mL by 15 days AOR, the LB rate was 84% and this was a stronger predictor of LB than either parameter alone. LB was only achieved in 9% of cycles where hCG levels neither “doubled” nor “reached 100”. Age was not associated with early hCG levels in cycles that ended in LB.Multiples hCG Levels. WinchestertoPittsburgh member. March 2016 edited March 2016. HCG has no bearing on multiples, some women simply have high levels. DS Maxwell - 08/25/2009. Wedded Bliss - 05/19/15. MC - 05/15/15 & 7/29/15 & 11/25/15 (You were wished for, hoped for and loved)HCG levels are measured using MIU/ML, which means milli-international units per millilitre. A singleton pregnancy HCG range typically reaches between 25,700 and 288,000 MIU/ML at the 9 – 12 week mark. A pregnancy with twins may display higher levels than this at the same stage. You can find a HCG levels chart online.Meta-analysis also showed that hCG levels, reported as MoM ≥2/2.31/2.5, might be associated with an increased risk of preeclampsia (OR 2.08, 95% CI 1.26 to ...Summary. hCG is a hormone that plays an important role in pregnancy, and levels can vary widely at this time and between individuals. Outside pregnancy, a high hCG level may be a sign of a...Low levels of hCG may be detected in a woman’s blood 8 to 11 days after conception. Sometimes with multiples, there is a higher, early trend in hCG levels. Twin and multiple pregnancies may also have 30 to 50% higher hCG levels than for one baby. Measuring hCG levels for twins cannot confirm the presence of twins.High HCG Levels: In some cases, high HCG levels may indicate a multiple pregnancy, such as twins or triplets. Certain types of tumors, such as gestational trophoblastic disease or certain ovarian tumors, can also cause elevated HCG levels. If HCG levels are abnormally high, further testing and monitoring may be required to …Jan 22, 2022 at 12:10 PM. awk I had a typo! my hcg levels were 48791. Like. r. renee-7834. Jan 22, 2022 at 3:44 PM. 5 weeks with twins my HCG was 55,000. By 9 weeks it was 350,000+.Multiples of the normal median (MoM) of free βHCG is a valuable parameter in evaluation of risk ... Serum levels of β-hCG and PAPP-A were assessed by immunoˇuorescence techniqueBarbarella76. Nov 22, 2010 at 9:21 PM. Can you tell me what your HCG levels were at 8-9 weeks with twins? I just got my results from last week, which would have been at 8 weeks 4 days, and my levels were over 288,000. The doctor said I am "heavily pregnant", meaning I am farther along then I thought or I might be carrying multiples. ….

Affected family members produce a mutated hCG form with multiple alterations in the CTP region, which result in persistently elevated hCG levels (10–200 IU/L) that cause suspicion of pregnancy or cancer . Therefore, confirmation of serum and urine hGC levels with different assays in combination with clinical observations is required to … 9,000 - 210,000 µ/L. 16 - 29 weeks (second trimester) 1,400 - 53,000 µ/L. 29 - 41 weeks (third trimester) 940 - 60,000 µ/L. Higher than expected hCG levels may happen if you’re are pregnant with twins and triplets. It may also happen if you have an abnormal growth in your uterus (womb). Falling hCG levels may show a pregnancy loss ... 5 weeks exactly today and got my blood work back. 14dpo- 232. 16dpo (4weeks)- 483. 23dpo (5 weeks)-7906 ???? If hcg doubles every 48+ hours the numbers are way higher than I was expecting! We had an IUI and I had 3 viable eggs and I’m super nervous it’s going to be a multiple pregnancy.Re: hcg levels on multiples. That's not even close to quadrupling. It's a completely normal range number. hcg is Supposed to double within 24 -48 hours in early pregnancy. So... that's a normal number. My betas were higher with my singleton. Loading the player... At 4 weeks 2 days mine was 1,825.First of all, it is important to define the term multiple myeloma. It is another type of cancer. It occurs in a plasma cell. It is a white-colored cell. These cells are responsible...Jan 27, 2014 · First IVF cycle on antagonist protocol (GonalF, Luveris) January 2013. Transferred two day-3 embryos, had severe OHSS, lost one twin between 7-13 weeks but was expecting one little one October 2013. Found out at 6 mos that our little one had died weeks earlier and had to induce and deliver stillborn, July 25, 2013. by Hallie Levine. Medically Reviewed by James Greenberg, M.D. | December 16, 2021. Stocksy. Think you may be pregnant with twins? Learn more twin pregnancy symptoms and risk factors often associated …Mar 20, 2021 ... Typically, the hCG level for twins will be around 30-50% higher when compared with a single pregnancy at somewhere about 200 – 1750 mlU/ml. hCG ...Mar 16, 2019 ... What HCG Levels are Normal by Week + What do Abnormal HCG Levels Indicate? ... hcg level in early pregnancy | beta hcg test to confirm pregnancy.Essentially, a beta-hCG test is used to confirm and/or evaluate a pregnancy via a blood test in a doctor's office. Beta-hCG (β-hCG) is a test that measures the amount of human chorionic gonadotropin (hCG) in the blood. This hormone is produced as soon as 10 days after conception. In healthy pregnancies, levels of hCG increase rapidly in early ... Hcg levels and multiples, 9,000 - 210,000 µ/L. 16 - 29 weeks (second trimester) 1,400 - 53,000 µ/L. 29 - 41 weeks (third trimester) 940 - 60,000 µ/L. Higher than expected hCG levels may happen if you’re are pregnant with twins and triplets. It may also happen if you have an abnormal growth in your uterus (womb). Falling hCG levels may show a pregnancy loss ..., Health Information on Lyme Disease: MedlinePlus Multiple Languages Collection Characters not displaying correctly on this page? See language display issues. Return to the MedlinePl..., Additionally, high HCG levels can also be a sign of multiple pregnancies, such as twins or triplets. An ultrasound is usually performed to confirm the presence of multiple fetuses. Trending HCG Levels: In addition to the actual HCG level, the trend of HCG levels over time is also important. HCG levels should ideally double every 48-72 …, Progesterone level from 17.9 to 17.8. July 15, 2023 | by jennynurse. Should I be concerned my progesterone level went down oh so slightly from 17.9 (7/12)to 17.8 (7/14).Hcg are normal and increasing as expected from 2411 (7/12) to 5946 ( 7/14).Note today 7/14, I am 5weeks 0days., In early pregnancy, hCG levels rise rapidly and can indicate whether a pregnancy is progressing as it should. In some cases, low hCG levels may be a sign of a potential problem, such as a miscarriage or ectopic pregnancy. On the other hand, very high hCG levels can be an indication of multiple pregnancies, such as twins or triplets., Aug 5, 2020 · At 5 weeks (I’m now 9 weeks 4 days) my HCG levels were almost 10,000. Haven’t had my first ultrasound yet but twins run in my family too. Everyone keeps saying twins but I’m only 18, I don’t think I could handle that just yet . Mine were the same at fine weeks. , Jan 24, 2024 at 4:23 PM. I just found out at 19 weeks 4 days I am carrying mo/di twins. It was completely missed on my 8 weeks scan. My hcg levels were lower this pregnancy then they were with my singleton and with my miscarriage. My first draw was was at 3 weeks 5 days at 52, then a week later was 490 4 days later was 3,799. m., Mar 11, 2022 ... It helps thicken a person's uterine lining to support a growing embryo and tells the body to stop menstruation. HCG levels rise after conception ..., Elevated hCG Levels. Women who are pregnant with twins may have increased levels of hCG, which is the hormone that is produced during pregnancy. However, increased levels of hCG do not automatically indicate multiples. Further investigation would be needed to verify the cause of a high hCG level. Abnormal AFP Test Results , The average hCG level for singleton is 1721, while average twins hCG value is 3446 miu/l. Although, you can’t expect twins just because your hCG Blood test result is above the average i.e. 3400 at 5 weeks LMP, while hCG 20000 or higher at 5 weeks have the highest chance of having twins., Twin pregnancies “can have 30% to 50% higher hCG levels than singleton pregnancies at the same time in early pregnancy,” Dr. Garg says. However, “detection of high hCG levels alone can't ..., Jan 24, 2024 at 4:23 PM. I just found out at 19 weeks 4 days I am carrying mo/di twins. It was completely missed on my 8 weeks scan. My hcg levels were lower this pregnancy then they were with my singleton and with my miscarriage. My first draw was was at 3 weeks 5 days at 52, then a week later was 490 4 days later was 3,799. m., Hcg levels, singles and multiples 17 replies curiousandterrified · 13/02/2019 07:17 Hello! I'm pregnant and hopefully expecting our rainbow 🌈 I had an ectopic a while ago at 5 weeks and my hcg levels only rose to 736. ... After that I had my HCG levels checked in my next pregnancy and at 5 weeks from my LMP (2 + 5 weeks from ovulation) my ..., Multiple pregnancies. Should I Check My hCG level Regularly? It’s not common for doctors to routinely check your hCG levels unless you are showing signs of a potential problem. …, Hcg is tricky because it can be indicative of multiples, but also can mean molar/ectopic if it’s super high- or just a singleton. The only real way to confirm if there is actually multiples is an ultrasound. With that said, here’s ours: Conception: 8/2. 8/16- 252.5 HCG. 8/18- 609 HCG. 8/25- 14,386 HCG, Meta-analysis also showed that hCG levels, reported as MoM ≥2/2.31/2.5, might be associated with an increased risk of preeclampsia (OR 2.08, 95% CI 1.26 to ..., An hCG level between 6 and 24 ... When there is a question regarding the health of the pregnancy, multiple testings of hCG done a couple of days apart give a more accurate assessment of the situation. The hCG levels should not be used to date a pregnancy since these numbers can vary so widely., 1. What is human chorionic gonadotropin? 2. What is the role of hCG? 3. How do your hCG levels change during early pregnancy? 4. What should hCG levels be at four weeks of pregnancy? 5. How do …, Written by Shelby Hale for Mira |. Last updated on Jan 25th, 2023. Once implantation occurs, the body begins to produce Human Chorionic Gonadotropic …, The high level of hCG hormone confuses the pregnancy tests. Fertility drugs and other medications with hCG can also raise levels of this hormone. This might mess up your pregnancy test results., Normally, the amount of hCG should double every 48–72 hours or increase by 60 percent or more every two days. If your hCG levels don’t double, it may indicate a nonviable pregnancy, whether intrauterine or extrauterine. A rapid increase of hCG in the blood can indicate, among other things, twins or triplets., The chart shows an average level range for each week dated from the first day of the last menstrual period (LMP). hCG Levels During Pregnancy. (from last menstrual period) Women who are not pregnant: <5.0 mIU/ml. hCG levels at 3 weeks: 5 – 50 mIU/ml. hCG levels at 4 weeks: 5 – 426 mIU/ml. hCG levels at 5 weeks: 18 – 7,340 mIU/ml., Jan 12, 2023 · 18 – 7,340 mIU/mL. 6 weeks. 1,080 – 56,500 mIU/mL. 7-8 weeks. 7,650 – 229,000 mIU/mL. 9-12 weeks. 25,700 – 288,000 mIU/mL. Generally, hCG levels are used to determine the status of the pregnancy and to keep an eye out for any possible pregnancy complications including miscarriages or ectopic pregnancy. Therefore, it is always advisable ... , For a single baby, the hCG level varies from 70 to 750 mIU/ml (i.e., milli international units per millilitre, which is a unit to measure hormones). High hCG levels can be found for twins during the early stages for pregnancy. The normal hCG levels for twins is 30% to 50% higher than in single pregnancy- somewhere around 200 to 1750 mIU/ml., Dec 29, 2015 · Dec 28, 2015 at 5:41 PM. Mine were not even close to that high and I was pregnant with twins, and continued on to have a healthy pregnancy. HCG levels actually are not indicative of a multiples pregnancy. Women with high HCG have singletons all the time and women with low HCG have multiples as well. Congrats on your pregnancy :) , If your hCG level is higher than 25 mIU/ml you’ll get a positive pregnancy test . Since levels double every 48-72 hours in the first trimester, the hCG levels should continue to rise. Though the ranges below are not absolute, it’s a good reference point for a single pregnancy. (More on twins below!), Dec 28, 2015 at 5:41 PM. Mine were not even close to that high and I was pregnant with twins, and continued on to have a healthy pregnancy. HCG levels actually are not indicative of a multiples pregnancy. Women with high HCG have singletons all the time and women with low HCG have multiples as well. Congrats on your pregnancy :), Mar 4, 2021 · An increase of at least 35% in 48 hours in early pregnancy is still considered normal. Below 1,200 mIU/ml, hCG usually doubles every 48-72 hours, but 35%+ is still normal. Between 1,200 and 6,000 mIU/ml serum, the hCG usually takes 72-96 hours to double. Above 6,000 mIU/ml, the hCG often takes over four days to double. , Blood tests. Pregnancy blood tests can detect hCG hormone levels as low as 5 to 10 mIU/mL. Urine tests. At-home urine tests require higher levels of hCG to detect a pregnancy, typically at least 20 mIU/mL. If your home pregnancy test is positive, your healthcare provider may offer a blood test to check your hCG levels., I don't have my first hCG level, but I think it was around 150 on about 12DPO, up to 408 on about 14DPO, and up to 17491 on about day 23DPO (I know the dates of the tests, but exact ovulation date is an educated guess). They did check progesterone, but I never actually found out what that level was. I was already on Crinone, so I'm not sure if ..., Oct 27, 2023 · As with multiple pregnancies, a molar pregnancy can generate elevated hCG levels that cause the hook effect on home pregnancy tests. Molar pregnancies can have serious complications and require treatment, so reach out to your provider right away if you're experiencing symptoms like bleeding, severe nausea or vomiting, or pelvic pain or pressure. , You can figure out your Hcg levels by using a hCG levels calculator. Absolute difference / First-hCG level x 100 = Percentage difference. Doubling time = log2 of the duration between tests in hours (First -hCG level / Second -hCG level) 2 (24 / Doubling time in hours) – 1) x 100 = one-day increase., I had nearly 200,000 at 7w3d. My doctor told me that she ordered an immediate ultrasound (that same day) because she suspected twins--she was right. Twins do not run in my family, so this was a complete surprise! I think it varies, but the high numbers, apparently, led my doc to the right conclusion.