Medroxyprogesterone question

I took my pills as I'm supposed to for ten days, I had really really really bad cramps. Last time I took it I started bleeding five days into my dosage, so I was taking my provera and clomid at the same time it was odd. That was a few months ago. (I got discouraged..) but now I'm done with the provera and no period. I feel funny. I feel like I'm not going to get my period. I almost am scared to take a pregnancy test. I've had so many negatives. And I don't really have any symptoms. I just feel different. It's almost impossible to explain. Has anyone had anything like this happen?