Hi Wildjo,
After a several failed transfers, I was diagnosed with anitphospolipid syndrome that required me to start heparin and aspirin ransfer. We go our BFP from that FET transfer. The Dr I went to once diagnosed with APLS suggested that for women with multipule misscarriage, aspirin and clexane/heparin can increase the chances of carrying to term by a fair bit - but the medical profession dont necessarily know why. In my case it also helps getting the embies to stick in the first place!

I cant say that sticking yourself with the needle daily (or twice a day if using heparin) is a great experience, and the bikini wont get a work out for a while (due to the bruises) but hey, if it helps...

Wishing you all the best.
FG