Aspirin in Pregnancy
Q & A: Does thinning your blood by taking an aspirin a day make it easier to conceive?
Recent information has implicated certain antibodies in infertility and recurrent miscarriage. Anti-nuclear antibodies, anticardiolipin antibodies, and lupus antibodies have been implicated. Aspirin is an old anti-inflammatory that has been used to "cool" this antibody response down to protect a conception. Therefore, it's the anti-inflammation properties of aspirin, not necessarily it's "blood thinning" properties, which have been used WHEN SUCH AN INDICATION is proven with blood tests.
You're confusing the anti-inflammatory properties of aspirin with all of the attention given to it's anti-coagulant properties, which has been bantered about on TV as helping in heart attacks and strokes. Aspirin will alter platelet functioning, which is a blood element necessary for clotting. (So will the non-steroidal anti-inflammatories, like Advil, Nuprin, Motrin, etc.)In fact, aspirin over-doseage will manifest as easy bruising, nose bleeds, etc., along with the famous ringing in the ears (tinnitis)Aspirin has also been suggested for Pregancy Induced Hypertension (Pre-eclampsia), but so far routine use of aspirin has not been recommended.
And I certainly wouldn't recommend it unless advised by an infertility doctor or your obstetrician.