I had sex with my boyfriend 1 day before my period and we used protection all the time except for once. He didn't ejaculate in me. I got my periods regularly after being late for just 1 day. I usually have periods for 3 days. I have ended my periods properly and after a day of my period I got slightly bleeding from my vagina which is bright red in colour and I have lower backache. I am confused if I can get pregnant even after having sex just 1 day before my period date. I am confused what to do. I had sex even few days before and I did use emergency contraception (unwanted 24) with an hour because I thought the contraception failed. I am confused whether this bleeding is my period bleeding or am I pregnant?