Can i get pregnant 2 days before period on birth control?

Not likely: Being on Birth control pills will prevent 95-97% of all pregnancies no matter when you have intercourse. If you have a normal period in flow, timing and duration you are not pregnant. Intercourse 2 days prior to your expected period has lower chance of pregnancy. So when you combine all 3 of these factors, you are highly unlikely to get pregnant. Best wishes!

Not with regular use: No, not with consistent use of secure contraception that is 99+% effective.