My boyfriend and i had sex the second month of me taking birth control. The first time we had it the condom was too small and broke. The next few times we had sex the condom also broke because we are still learning and getting the hang of using condoms so that's why im on birth control. When the condoms broke we would stop and finish another way without sex and we do that anyway when he's about to come during sex. but im now on my sugar pills and on my second day im bleeding lightly but I got really bad back pain the day before that. could this also be implantation bleeding?? please help I'm really nervous we are both young and do not want children