Suggest Cause Of Pain In Cervix Area On Having Sex

bolth me and my boyfriend have no stds we had unprotected sex about 2 weeks before i normally get my period, a week early(1 week after sex) i think i got my period, it was lighter and i had a brown discharge, the last few times i had sex there was a pain in my cervix area, and i randonly get pain in my uturis area during the day. and im 15