ok so me and this guy had unprotected sex on feb 14th. he did finish inside me but i think i had my std while he did. we waited a whole day then had sex AGAIN but this time he came twice inside of me.. i have recently stopped taking birth control a whole month ago.. could it be a high or low chance that i could possible get pregnant? i went to the doctors for my std and got medicine. could that affect me from getting pregnant ?