Pregnant?

So I recently started taking the combination pill. I started it on the 4th day, which was also the last day of my period. Towards the end of my second week on it, I stupidly let my boyfriend cum in me. I know birth control is not 100%. Now I am just worried that I should’ve taken a plan b, when I had the chance. I should be starting my period in 9 days.

Do y’all think I’m good or could I possibly be pregnant?