Teen Pregnancy Scare?

I had sex during my period about a month ago and we used a condom nor did he cum. At that point, I had been taking birth control for 3 weeks and I stopped to make sure my period would come. That was April 21st. I did not continue my birth control again after. Now, my period is late and I have absolutely no PMS symptoms and it’s really stressing me out. Is there any chance at all I could be pregnant or am I overthinking?