I started taking EPO at the beginning of this cycle. I haven't had any side effects so far (today is CD13), but I always take all my pills with some food because on empty stomach I don't feel so well no matter what kind of vitamin/drug I take

So I would advise to take it with some food. I haven't O'd yet and I noticed my CM hasn't been abundant at all - just the regular sticky kind like I always have in the beginning of my cycles. GL!