personally,,,,, 2 weeks of upper stomach crampign in the first month, then i never had it again ( your body has to adjust). It happens to me evrytime i get off and on the pill. Shorter lighter periods, less cramping. I think the pill is great in gerneral,,, but thats just me.... I am suspicious of a few things with the pill though,,,, my teeth have seemed to weaken alittle, and i think its best to take a folic acid supplement while on it,,, I only say this because i have been reading alot about the pill, becasue i have cervial dysplaisa ( mild),,,and they have linked BC with it affecting the amount of folic acid in your body and that is linked to cervial dysplaia..... anyways im not a doc, so im saying thats 100 percent true,,, its just what i read. But over all i like the pill, I already have 2 kids and its well worth it. good luck!