i am on birth control pills, and i just had unprotected sex with my boyfriend on saturday. prior to that, i was supposed to be taking my 4 sugar pills, but my doctor prescribed me not to since she wanted me on new birth control pills. so i finished all my active pills, didnt take any of my sugar pills, and had unprotected sex on saturday. i took my new pills on sunday night, but i had some bleeding on sunday morning. i thought it was just left over blood or something, so i didnt take any mind to it. but monday came around and i was still bleeding. it wasnt a heavy flow, but it was a very light flow and it still is (its wednesday now by the way). im wondering if this is a period or not, maybe if its just spotting. is it a sign of pregnancy or anything? do i still have a chance of pregnancy even though i'm bleeding?