I just had unprotected sex with my boyfriend and I'm concerned about pregnancy. I'm on birth control and have been several months now. I've been taking it the same time everyday until these past few weeks (maybe a little longer) I've been taking it at different times each day, mostly within an hour of each other. He didn't ejaculate inside but I'm still worried. Should I take an emergency contraceptive just to be sure nothing happens, or would the emergency contraceptive have harmful effects? Also, this was yesterday and I already have the emergency contraceptive. I'm just worried and want to do the best thing for my body. Please help.