Taking aspirin while TTC? Multiple chemical pregnancies?

Hi ladies, I am TTC # 3. I am a mommy of 2 PAL babies and have been TTC for 11 months. I have had 3 (unconfirmed) chemical pregnancies in this time and am currently seeing a specialist. He says that even though I had 3 months with positive tests, he can't believe me because there was no blood work done (the losses were between 4-5 weeks). He wants to rule out all "conception" issues, which I don't think is the problem since I have 2 kids and had positive tests recently. I am thinking it is either a hormone/clotting/luteal phase problem. I can't really do anything about progesterone levels but did start taking B6 to make my luteal phase longer. The first month it worked and I got a +hpt, but then got my period 6 days later. Last month I had a negative test but continued the B6 and had another 28 day cycle. This month I am on track to have another 28 day cycle it looks like, and timing was good. I feel my chances of becoming pregnant are very high this month, but now I am wondering if I should take a baby aaspirinjust in case these losses are due to a clotting problem that is undiagnosed. I want to increase my chances, but also don't want to tinker to the point of causing myself not to keep a pregnancy if I do become pregnant. The doctor doesn't ssee emconcerned yet and wants to rule out the obvious before doing anything else. I am just curious if anyone has gone through a similar situation with early losses and if aaspirin was prescribed. If so, did it help and when did you start taking it? How long did you take it? I am very tempted to take it this month but am thinking I should wait a month and make sure I "can't" get pregnant with the changes I already made...but I worry I will have another loss too that could possibly be prevented. Anyway, just curious what you all think. Thanks!