I have "heard" that baby aspirin can be helpful to:
a) assist with implantation and TTC
b) prevent miscarriage

I heard that you should be taking it a month prior to TTC for (a)
and that you take it as soon as you get BFP for (b)

However, I have also heard that it is NOT helpful, and is infact harmful, unless you actually have a clotting disorder.

What has everyone else "heard"?