Hi Janey,
I have had a very early loss and 2 very late losses. I take 81mg aspirin daily and I am on the blood thinner clexane. I do not have mthfr or any other known disorder (I have been tested for just about everything). There were large clots in the placenta when my daughter was born so there is a problem with clotting. I started taking aspirin before we started TTC. There is no harm in taking the low dose aspirin. If you feel like you should be taking it, then do it. My doctor does not give clexane to women that are only heterozygous for mthfr but I do not understand telling you to not take the aspirin. You should talk to a second doctor to ease your mind.

There is a women in the parenting after loss forum that has mthfr and just had a healthy little girl only taking the low dose aspirin.