if you suspect you are pregnant for any reason, you must stop taking birth control pills and take a pregnancy test. having those extra birth control hormones can screw with prenatal development in the event that you are pregnant and lead to birth defects.
that's a general message to any girl who is on the pill and yet suspects she may have gotten pregnant (whether by pill failure or otherwise).
now, bleeing 4 times in a month is not a good thng. i am assuming the bleeding isl ight and short. if it's prolonged and heavy, that means things are even worse. please go see your doctor, tell him or her your symptoms. most likely, it's that your body doesn't like that particular formula. if you change to a different pill, things may clear up.
Living proof that it's hip to be square .