Gas or baby?

Mama🐻 • SAHM 👨‍👩‍👦‍👦 married my best friend 💍 boy mom x2💙💙

35+4 weeks. Started off as a gurgling tummy but the pain got worse and worse. Currently feel very nauseated, very intense lower back pain that comes and goes every 5-10 minuted or so. Laying on my side now and trying not to make a big deal as I'm trying to put my two year old down for a nap.. Just looking for a little advice. Sound like bad gas pains or contractions?