My period ended 3 days before i had unprotected sex i took an emergency contraceptive then i had some bleeding was it my period?

Emergency birth cont: Temporary cycle disruptions are common and normal after taking emergency contraception.

Ovulation: You cannot get pregnant that soon in your cycle, you were not ovulating then if you are a normal female. So, the emergency contraception was unnecessary. The bleeding you had was most likely due to the extra hormones in the emergency contraception.

Likely Plan B: Potential side effects w emergency contraception include menstrual flow changes (spotting, bleeding, early or late period). Take pregnancy test ; notify dr if your period is 7 or > days late.