Deep in limbo hell

[WorriedBadger]

I apologise, this is long.

I am deep in limbo hell after some bleeding and 2 early transvaginal ultrasounds.

1st ultrasound (at maybe 6 weeks) - empty gestational sac measuring 5.7mm. Terrible HCG rise of only 16% over 40 hours.

Presumed blighted ovum. I had given up hope.

2nd ultrasound (at maybe 7 weeks) - gestational sac 10mm, yolk sac present, Fetal pole 2.2mm with possible FH flickering.

Way too small for dates but something is developing.

I am 39, diagnosed with primary ovarian insufficiency (high FSH, high LH, very low AMH). Short and irregular cycles. On cyclical HRT. I track cycles, don’t ovulate every month.

My last period was 24/1/25 and my ovulation was around 31/1/25 - 1/2/25, confirmed by BBT. First positive test on 9/2/25 (8 or 9 dpo)

So although by last period dates I would have been 5 weeks and 6 weeks exactly on the scan dates, so the measurements wouldn’t be that concerning. I know that I ovulated early and had the positive test which would put me at 6 weeks and 7 weeks.

I just have no idea what’s going, I’m scared to have any hope. I was fully expecting the sac to have remained empty at the second scan. I have another scan booked for 1 week after the last one.

Extra information - the bleeding was slight and mostly brown and it stopped 4 days ago. I also stopped progesterone 8 days ago as I thought it was a lost cause.

Can anyone shed any light on the dating dilemma? Or does anyone have an experience similar to mine and can let me know the outcome?

I’m quite literally losing my mind!

What did your Dr say? It’s not unusual to measure small or big at ultrasounds, especially so early on when a few days makes a massive difference. If they aren’t concerned and there has been 1 week of growth between the scans then I wouldn’t worry. Ovulation prediction is just a prediction, even that can vary by a bit plus sperm meeting egg timings etc.
fingers crossed your next scan shows good growth

Thank you for taking the time to reply.

I’m in the uk, under the EPAU (early pregnancy assessment unit)

They said they can’t say anything for certain, it could go either way. The HCG rise doesn’t look good but they wouldn’t do another. The most recent scan report says uncertain viability.

I haven’t DTD since 1st February, and had a positive test on the 9th February, so dates cannot be too far out from what I thought originally. So it’s looking like 2 whole weeks behind, which can’t be good.