Freaking

Last week I was messing around with my boyfriend and he pulled my panties down just a little and came over my lower back and top of my ass. My vagina was covered by my underwear and I do take the pill. Why am I still freaking out that I could be pregnant? My next period is in 4 days and I can't stop thinking about it. I take my pill everyday but can sometimes be a little late taking it (maybe by 30-45) Everything important was covered 😭😱 I'm gonna give myself a stress headache here. I know the chances are so slim but I'm still freaking.