Paranoia about being pregnant

Hello! So I lost my virginity about a month ago .. we used a condom and he pulled out, but now I’m late for my period by 4 days and I can’t help but be completely stressed about possibly being pregnant. I was wondering if it’s normal to stress about being pregnant after the first time or if it’s possible I am pregnant, I’m just too scared to wait for my period and or to take a test. Please help!!