Ok, so I'm CD32 today, pretty sure I'm not prego, and 1 day past AF's arrival. I didn't stop my Prometrium, which I started taking 3DPO, just in case I AM prego. I figured I'd stop as soon as AF showed. Since this is my first round of Prometrium, I need to know if it will STOP AF from coming. Or, will it add a couple days to AF's arrival??