?????

So i just started anti depressants a week ago and I was supposed to start my period today, I always start on the Tuesday of my cycle because I finish my birth control pack on Saturday. Anyways, I still have a day until my period actually starts but this is late for me. The last time I had sex was a week before Christmas and we used a condom and he didn’t even cum inside me. Also, I’m on birth control. Could I be a little late because I’m just starting these antidepressants?