Gas pain or early labor?

Hi mamas and mamas to be đź’—

I’m 37+5. Lost a huge chunk of mucus plug a few days ago and have continued losing it since. Baby is low and engaged and I’ve been having some spotting.

Tonight I’ve had a couple of “episodes” of what I feel is period cramps/gas pain that last like 45 seconds - 1 min. I’ve been having these vague period cramp feelings for about a week but tonight is the first time I can feel them definitively start and end.

I’ve gotten about 1-2 for the past few hours. Normal weird end of pregnancy stuff or early early labor?

I know I was having little baby contractions earlier today on the NST!