Understanding Recurrent Miscarriage and Progesterone Support

Question
I'm a 31 year old woman, I first became pregnant August 04 everything was great but at 12 weeks I miscarried. My doctor told me it was a blighted ovum... He performed the D/C and I waited 3mths months and became pregnant again in Febuary 05 I again miscarried at 6wks. I had a Thrombophilia panal done and it was determined that I have a blood clotting disorder. I went and got a second opinion this doctor put me on baby aspirin 1x daily along with Folcaps 2x's daily with my prenatal vitamins...he also put me on progesterene suppositories 200mg's 3x's daily. I followed this routine in May 05' but ended up not pregnant but had extreme cramping and a very light period. My doctor did a p/u and made a comment that the progesterene had thinned my lining and that is what caused me to not have a  normal period. He told me to discontinue the progesterene and stay on the baby aspirin and Folcaps.

My question is will my body correct itself? I never had a problem with my uterine lining before and now the progesterene has thinned that out. My doctor told my husband and I to keep trying and everything will be fine and I should be pregnant within a few months I am worried that the progesterene has set us back. What should I expect in the next few months?  

Answer
Everyone appears to have done the right thing. If you have more than one miscarriage, we usually use baby aspirin as well as progesterone suppositories in order to prevent another miscarriage. The risk of miscarriage is 15-20% of every pregnancy. There is nothing you can do to cause a miscarriage and there is nothing you can do to prevent a miscarriage. However, if you have a blood clotting disorder, baby aspirin will help. If you have a problem with your "luteal phase" (the time of the month from ovulation until your next period) or if you have a decrease in your circulating progesterone, then progesterone will help. However, sometimes, although it helps prevent miscarriage, progesterone can thin out the wall of the uterus. (It does that every month even when you are not taking supplemental progesterone. Progesterone produced by your body is what causes the sloughing of your endometrium or your period). Your body will correct itself and you will not have any problems with the uterine lining. Keep trying. I can't predict when you will become pregnant again, but the odds are in your favor. Good luck.