I have had two miscarriages since May. First one at 5 1/2 weeks and the 2nd one (confirmed yesterday) at 7 1/2 weeks. For the first one I have no idea what went wrong, this time I managed to get an early scan at 7 weeks. A heartbeat was found, but the fetal pole was measuring way to small for 7 weeks (1mm). So I was prepared for the miscarriage to happen. And it did, spotting started Monday and yesterday I had a scan confirming it. 
My cycles are short @ 24-25 days. Since May I have tracked my ovulation, and this happens at 15-16 days. So the time from ovulation until the start of my period is very short. My doctor seems to think that's fine, as I have no problems falling pregnant (just retaining it). But I am wondering whether I could have a hormone imbalance, ie not producing enough progesterone? Could this be the reason for poor growth and ultimately miscarriages?
I have two children already. My son is 16 and my daughter is 16 months. I have had no pregnancies in between. Both miscarriages were after the birth of my daughter. I am 44 years old, so time is ticking for me. We really want another child.
Thanks for any advice & ideas (and hugs)