"i used ocella years ago and it was great at first. my cramps weren&#039;t as painful or etc but then i started getting severe stomach pain and guess what? i found out i had gallstones due to ocella and had to have my gallbladder removed when i was 20 and i&#039;m 25 now. so if any ladies experience stomach pain on the right side you might have gallstones due to this pill"