I'm currently taking clomid that was proscribed by my obgyn but he really is not monitoring me at all & not very helpful when I try & ask questions. Says I need to see a specialist... If I could afford it I would!

So I usually take progesterone to bring on a bleed but I want to know if taking it before I ovulate can mess things up during a clomid cycle? Can I just start in on day 18 no matter what? Or do I have to know I've ovulated before I start taking it?