Yesterday, my GYN prescribed me Yaz birth control pill. I've never been on the pill before, and my main reason for taking the pill is to help with monthly cramps(menstrual cramps throughout the whole month plus period cramps) due to possible endometriosis, so I am not using it for the purpose of birth control. Anyways, my question is when do I start it? Am I supposed to start it within the first 24 hours of my period or Sunday start(whatever that is) even though I am not using it for birth control? Is it okay to start it anytime? My period ended a week ago, so I wouldn't really want to wait to start the pill, plus my period has been so irregular, I could have my next period over a month from now, so I don't know. Also, has anyone ever taken Yaz? Any side effects? Thanks!!