Okay, so I stupidly had unprotected sex on 4/12/13 (Friday), and yes he did ejaculate inside me. I realized later that night i had missed 3 days straight of my birth control. I was on the third week of my birth control as well. It's 3 days later and i've been having cramps and a very light pink and brown spotting. I don't know if the spotting could be from me forgetting my birth control or something else. I also had unprotected sex both saturday and sunday (yes i know.. i wasn't completely sober) I'm smarter then this and i usually always remember my birth control and use condoms. I've never been pregnant but i'm really concerned, so any help would be great :)

Thank you.