Is it the birth control ?

Monay

Soo I am on BC pills I started taking them in May. I have had my period ever since I started taking the pills except for this month. I just finish my pack and my period usually coming on the first or second week of every month now. I am having unprotected sex and he is finishing in me. My period is still not on. I’m not even having no Singh’s of it coming on at all.