about 12 weeks a go my bf cut me in side my vagina then it startid bleedin and wen it stopt i went to the docs to get it chekt out and they sed they cudant see enything and iv not got std or enything like that we had sex on munday and on friday it startid bleedin agen and no its not my pariod but its not stopt bleedin haw do i get it to stop bleedin or shud i go to the docs plz help