Hello. i am a 17 year old female, i am sexually active but i am using birth control, i just finished having my period 2 weeks ago, but just a few days ago i started noticing blood, not fresh but darker, i dunno, my boyfriend accidentally got vapor rub on his penis and we had sex, it irritated me and i felt the urge to go to the washroom ever 2 seconds, could the blood be for the vapor rub or is it something else?