Hi Meyette,
to SC. Congrats on your pregnancy. Sorry for your previous loss.
I too went through a loss a few years ago, I was scared all through my next PG, and even though I delivered that next baby to term, I have still been very cautious with this current PG. It is very normal to be scared that it might happen again, because losing a long awaited, or a miracle surprise baby is so hard.
The docs will tell you that m/c is quite common and just because you had 1 it doesn't put you at a higher risk for another one. Only if you have had multiple losses do they concider you at a higher risk for another loss.
Do you know why you m/c'd? If you know why, you will have a better chance to prevent the next one.
There are many different reasons for m/c, but unfortunatly most docs usually only do testing if you have multiple losses.
What a lot of docs don't consider is the risk of m/c for those of us with PCOS. I personally think that PCOS puts us at a higher risk for progesterone problems: ie corpus luteum failure. If the corpus luteum fails to produce enough progesterone, or stops producing progesterone before week 12, then the PG can stop, and m/c will result.
I suspect that corpus luteum failure is what caused my m/c. The PG ended at 9 weeks, but I didn't have any symptoms until I was over 14 weeks.
I only had my progesterone checked 1 time with my next PG, and it was a bit low, so I was put on supplemental progesterone until week 13.
With this current PG, I asked my doc to check my progesterone levels as soon as I got the BFP. The first 3 were above 15, so they were fine. My doc said that I didn't need progesterone, and I didn't need any more progesterone checks.
Well, I was a bit concerned because the last one did drop a little. It is supposed to go up, not down during pregnancy. Plus, with my m/c, the PG didn't end until week 9, so it is possible that my CL might have failed around week 8. Those first 3 progesterone checks were taken during weeks 4 and 5. So at 7 weeks, I went to the OB office for the intake appointment, when I filled out all the paperwork, and had blood drawn for basic lab tests. I asked the nurse checking me in if we could check my progesterone 1 last time, just to make sure it was still high enough, since they were going to be drawing a bunch of blood any way. She agreed.
Well, it is a good thing that I had that last progesterone check done, because it had dropped down to 10.6. I have heard that if it gets down to 8 then the PG can stop. I was started on supplemental progesterone as soon as we got the results back. And so far the baby is doing well.
So, just as a precaution, I would strongly encourage all PG PCOS cysters, especially those who have experienced a previous loss, to get their progesterone checked the first few weeks, just to make sure that their progesterone levels are rising, and not falling.
Hope that you have a happy and healthy 9 months.
Mixed Emotions (New pregnancy mentioned) 
