hi it only takes one sperm to get through if its the right time of the month. so the bleeding could have been implantation bleeding. so as you have missed your period then its time to get tested either an hpt or just go see your doctor and have a test done there you can then decide what you want to do either carry on or abort i would have a long talk with mother and your b/f what could be done over the coming problem if you are pregnant. one last thing it could be just a skipped period this could be from the stress your putting on yourself. hope something here helps. good luck
i had unprotect sex my period was 11 days late i had some light bleeding that lasted day could i still be pregnant? . he pulled out but he pre came in side me and he didn't pull out on time.