Me and my boyfriend of two years have been having sex for awhile andhave always used condoms and im also on birth control. but recently we had sex without a condoms one time and didnt get pregnant so we assumed that the pull out and birth control was good enough. my last period was December 17 but as soon as i stopped bleeding we started having sex again without a condom but he pulled out right before he cummed. and then we also had sex on the 29th. and later that night i had a line of what i assumed was blood but it was brownish and i just said it was fine but it has done that for four days straight at least once a day. and all of sudden i had this nasty penny taste in my mouth and i have a lot of gas. i don't want to panic but i need something to make me not so worried if you have any answers please help.