Are these contractions??

So I’m 39 weeks and 2 days with my first. I’ve never had Braxton Hicks my whole pregnancy, and I have no idea what to expect. I took a pretty big walk this evening and when I got home and rested, I started feeling period like cramps off and on. I haven’t started timing them because I don’t know if it’s actually contractions, but they’re pretty irregular.

Do these sound like contractions? I’m so clueless!!