I’m so stupid

I KNOW this is really stupid and I’m completely dumb but I really need help. So I’ve been on birth control for 6 days and today was the last day of my period, well I had unprotected sex and he came in me. I did NOT realize that I was supposed to wait till the 8th day to be protected. PLEASE DO NOT BE RUDE I KNOW IM STUPID. Could I be pregnant????