chance of pregnancy?

Even though my boyfriend and I dry humped with clothing ( the second round and the first was him in undies exposed and myself with pants on... he had pre on the underwear) and precm was there when I touched his penis and when he touched my vagina ( with hands, and he hadn't touched any pre only the fabric of his jeans )

This occurred two days before I got my period, I heard sperm can service for 2-7 days and he hasn't ejaculated either, although pre would've. I've heard that you can get pregnant even when you get your period..and will after.. is it possible in my case?