im 17 , i ended my period about a week ago , and juss yesterday i started experienceing a large amount of brown discharge i woke up this morning and im still discharging. it doesnt have any odor. im also having really bad cramps. i have been on birth control for about 3 months but i may have missed a day. i did have sex but it was protected... what could this be? sommeone pleasee helpp! /: