hi so my boyfriend and i had unprotected sex (big mistake) on the 21st of december he didn't ejaculate inside of me tho. i took the morning after pill the same day perfectly at the right time. 4 days later i got this discharge/ blood thing that was dark brown and it lasted 5 days. I'm assuming that was the pill doing its job? according to my period tracker, my period was supposed to start on the 16th of january so im 7 days late. I have had lately alot of clear/milky discharge that is enough to think its my period but it never is and slight cramping in my stomach area. alos took a dollar tree pregnancy test and it said negative. opinion? help