Fetal Heart Rate

Jane Foley's picture

QUESTION

Dear Ms. Ultrasound,
I found out that I was pregnant on Dec. 29 and went for confirmation on Dec. 30. The line was very light pink and my level was a 17.

I started bleeding on Dec. 31 pretty heavily - I had a few blood clots. I spoke to my doctor on Jan. 1 and he called it a chemical pregnancy and said I was having a miscarriage. It was hard to deal with and I was very upset.

I had a follow up appointment schedules for Jan. 19 but it was canceled because the doctor would be out of the office on that day. I rescheduled for Feb. 2. I decided to take another pregnancy test on Jan. 19 to make sure the test came back negative (I thought that if I still had any of the miscarriage in me it would still say I am pregnant - that's why I did this).

I went on Feb. 2 for my check-up appointment and spoke to the doctor about not having started my period - he ran a pregnancy test and it came back positive! He checked my levels on that day and they were 1600, 2 days later they were 2530. He scheduled me for a ultrasound on Feb. 10. On this day we saw the baby and were given a due date of Oct. 3 (the ultrasound tech said I was 6 weeks and 3 days). The fetal heart rate was 97 and the doctor showed concern for this. He told me there is a chance that I could have a miscarriage based on statistics.

I don't think I am that far along. I think I am due Oct. 7 - even though it's a few days different I think it matters. Please tell me what you think is going on. Tell me about the fetal heart rate and my due date. I do go back Feb. 17 for another ultrasound.

ANSWER

Hello, A few days different on an ultrasound is normal. So being due on Oct 3rd or 7th puts you in a reasonable error ratio for ultrasound.

I think in your case the slow heartbeat is concerning. Any time the heart beat dips below 100, we get a little worried.

You have been back for you second ultrasound now and hopefully all is well. On occasion the ultrasound catches a slow heart rate like this and when a second ultrasound is done the heart is back up into the hundreds.

If you have any further questions since your last ultrasound please write back.

With regards,
-- Jane RDMS