Nothing serious

My husband had a vasectomy in January when I was pregnant with our third child ( each of our fourth). And even though I've always had late periods and skipped months at a time I still worry it's going to magically reverse itself. So now that I'm about two days late part of me is like go get a pregnancy test! But the rational part is telling me not to be stupid. Does anyone else get these unrealistic pregnancy fears? Or am I the dumb one. Lol.