Could I be pregnant if I had sex 2 days before my period and am currently on birth control?

I also took the morning after pill within 48 hours but take antidepressants. I am very regular. I was suppose to get my period 3 days ago and am very concerned.

not likely, but possible. morning after pill can change your schedule. Wait a few more days then take a preggo test from drugstore.

Probably not, as Missy30gal says... If you had sex two days before your period should have started (and that's the only sexual encounter that has you concerned) then chances are pretty good that you aren't pregnant since you most likely would not have been ovulating 2 days before your start date.