But at that level they should have seen something in the sac. She said it was all very strange, and because of the small size of the sac (20mm-from memory), the date of my last period and the high level of hcg she told me its most likely a molar pregnancy. Its an extremely rare condition, but the numbers dont add up and its the only explanation.
Also, if the first hCG level is 48; it could still be a twin pregnancy. Thus, a single hCG level cannot distinguish between a singleton and a twin pregnancy. Of course, if the first hCG level is say, 1200 mIU/mL; it is most like a multiple pregnancy — but you cannot be sure till the ultrasound a couple of weeks later.
Aug 20, 2011 · Like other people have said, I don't know if HCG levels are reliable indicators of multiples. My first HCG at 14dpo was 91, 16dpo was 192, and 22dpo was 2598. So my levels were doubling about every 38 hours, and they were pretty much right in the middle of "normal" for a singleton pregnancy.
I found out at 8 weeks that I was having twins but only know my 16dpo hcg numbers and they were 1800. Hindsight - it was clearly twins.
Mar 15, 2019 · Hormonal changes can cause tender, swollen breasts, and this pain might be a little more intense when you're carrying twins, thanks to the extra amount of the hormone hCG (human chorionic gonadotropin) your body is producing.