Me and my boyfriend dry humped one time this month. i had my period last month but i can't remember what day exactly. i know it should've already came. i'm freaking out because i don't know if i can be pregnant?

My period is late and it is never late. i am only 15 so i know they can be irregular but i've been having my period for about 4 years and it's never been late. I need answers if i could be pregnant? we both had multiple layers of clothes on and we dry humped no longer than 3-5 mins.