What are the chances I’m pregnant?

First off, my period is pretty irregular to begin with so I may just be paranoid. I’m 19 and I just got my first boyfriend two months ago, so I’m new to this whole sex thing lol. We haven’t had penetrative sex, he’s fingered me and I’ve grinded on him (no underwear). Whenever he cums it’s never near my vagina, so the only thing I’m worried about is precum maybe from the grinding? I read online that it’s pretty unlikely that Precum can get you pregnant but I’m just freaking out, I’m only 4 days late which isn’t too out of the normal for me but will someone please just try and calm me down and speak to me rationally? 😫😫 thank you 💗