Pregnancy with dry humping?

Hi guys I just turned 18 and my boyfriend wanted to try dry humping but without any clothes in between. Now I’m a day late for my period and I’m really scared I could be possibly pregnant. Ik the chances are low but I think I just wanted reassurance it only happened one time so I’m probably overreacting right? Sorry this is kinda a dumb question and it might be in the wrong group thank you!