Is this labor starting? First time mom needs advice!

Gina

I’m 37 weeks 6 days! I was getting ready to go to Kohl’s today after breakfast and I started to feel back pain with period like cramping. The back pain would get sharp then travel to my stomach but no hardness in the bump. I’m also very nauseous and tired and the back pain has been constant all day with diarrhea! Sometimes it radiates around then it stops. I keep falling asleep bc I’m so tired. Is this how your labor starts?!