Progesterone Masking Miscarriage?

by Penny

I found out very early that I was pregnant because I have a very short post-ovulation time. The day before my fourth week, I started to bleed. I went to my fertility doctor the next morning and she discovered that my progesterone level was 6.8. She put me on 400mg of Prometrium a day and 90mg of Crinone.

This stopped the bleeding after about four days. Now I am 8.5 weeks pregnant and the fetal pole has failed to grow beyond 5.9mm and has a heartbeat of 71 BPM. I looked up the statistics and found that I have a 91% chance of losing the pregnancy. Now I am waiting for the pregnancy to “declare” itself.

My question is: does the Prometrium mask the symptoms of miscarriage? If I miscarry, will I know it at all before I come off of these supplements?


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Sep 19, 2009
Progesterone Masking Miscarriage?
by: Wray

Hi Penny. Both Prometrium and Crinone are progesterone which is vital for a successful pregnancy. If it fails neither compound will mask a miscarriage. I had a miscarriage at 8 weeks and it's very evident when it happens, the foetus plus sac is about the size of your palm. As you have a short luteal phase it would be ideal to start using progesterone before you intend falling pregnant next time. Please see this web page. Take care.

Mar 17, 2010
by: Anonymous

I have had five miscarriages and for two I was on Prometrium 100mg, vaginally, three times a day. Both times they were missed miscarriages and I found out at an ultrasound appointment two weeks after the fact. According to my OB, the Prometrium can prolong a doomed pregnancy.

But... you should call and ask to be checked. That way you will know for sure. Good luck!

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