No cramping while on Clomid. Will I still ovulate?

I guess after reading the side effects on so many clomid boards and having heard from my doctor that usually with clomid you feel slight twinges or cramps when ovulation is about to occur. This is my 1st 50mg round of Clomid and im on cd13 and so far I don't feel ANYTHING. No cramps, no twinges....nothing. Does this mean I will not ovulate? has anyone ovulated and not felt anything prior to ovulation? I have started OPKs (2 days ago) and have been negative so far, I will keep up with the OPKs until I Ovulate. I usually have 45-50 day cycles and IF i ovulate naturally I guess it would be around cycle day 30-35 based on when I get my periods. So anyways my question is: Can you ovulate on Clomid without feeling any cramps or any impending ovulation signs??