Should I call my doctor??

Brandi • Married 💍 Boy mom ×4💙💙💙 & Expecting 👣
It's 5 am where I am and I have been experiencing stomach tightness since 12 and diarrhea with the stomach tightness since 2.. I'm confused on what could be going on, I read that it could be a start to labor but I'm only 35 weeks.. should I give my doctor a call ?