Am I pregnant

So I didn’t have a regular period instead of the normal flood gates like normal it was just dry blood I didn’t even need to wear a pad I had unprotected sex a couple of weeks ago with my boyfriend I am on birth control I don’t know if I took it in the same day every day I just don’t know if I should consider that a period or what since I’m still on birth control I was thinking of just waiting until the next month to see if my period actually comes any thoughts