can dry humping lead to pregnancy?

[Anm45]

My boyfriend and I started to dry hump a few days ago. I was wearing a bathing suit bottom with a dress. He was wearing what looked to be basketball shorts. He started to move on top of me and I felt him go inside just a little bit in the bathing suit bottom, but not enough where he took my virginity, and definitely not as much as a tampon. More like a light poke when you first decided to explore yourself. And then he would move out and would start moving against the side of it. I was wearing a panty liner too because I was supposed to get my period that day, but I think it only covered the top of my stuff.

I keep track of my period on an app because it's not completely regulated. Sometimes it happens a few days early or a few days late. I'm two days late which is usually not a problem, but considering he ejaculated on me worries me. I've read online that there's small chances of pregnancy due to dry humping, even while being a virgin. Knowing my luck, I've been scared since.

I was wondering if any of these situations I explained above can lead to pregnancy or if it's me just over thinking it?