the pessaries are for luteal phase support - basically to help ensure there is enough progesterone in your system to support a pregnancy if it takes (fingers crossed for you) - some clinics use the pessaries, some use booster shots, and i think most use crinone gel for ivf

the cardiprin, i'm no really sure of - i THINK (and i'm guessing, so don't hold me to thi!) - it may be what a lot of people refer to as baby aspirin - perhaps they believe there is a clotting factor that is stopping pregnancy from occuring and/or holding. as i said, this is a guess, but i have read elsewhere on BB about "baby aspirin"...

HTH's