CLOMID & FOLLISTIM INJ.

Emily
My Fertility md put me on clomid 25, then 50mg. Then she stopped that and put me on follistim Injecttions at 50mg then 75 then 100mg. THAT DIDNT WORK. Now she wants me on 150mg. I don't know what to do, I'm frustrated. Why didn't I ovulate? I'm only 30years old. My periods are normal. Please any advise???