If i take birth control 2 days before my period , and then i took 5 of those pills as emergency conception , would that make my period late?

See an OB: Wait until your period is at least 7 -10 days late and take a urine pregnancy test. Depending on your sexual activity and how you were using birth control, it sounds more likely that you are pregnant if you just started birth control 2 days before your period. The most important time to be taking pills is every day up until you ovulate, and a safe period of time afterwards.