Problems with Clomid

Robyn
I found out I was pregnant last February and a few weeks later had a miscarriage. I got a positive test again last October but it turned out to be a blighted ovum :( so then my dr started doing blood tests and ultrasounds and one of the ultrasounds showed cysts, so she told me I probably have pcos, except all my hormones were normal. I've had cysts before so bad I've gone to the hospital and my periods were always so painful. So she wanted me to try Clomid to help me regulate my cycles because I wasn't having a period every month. The first month I took 50mg, went back for an u/s and my follicles weren't big enough so she told me to take 100 next month. I did and when I got my period last month I was miserable. I was throwing up and dizzy and felt like crap. So this month I didn't take any and now my period is  like 2 weeks late with no bfp...does going off of clomid stop ovulation?