What Do I Do?...

Elizabeth • 18/ mommy to two beautiful angels👼/ pregnant with rainbow babygirl💜/ Engaged to my bestfriend💍

Hey, im 28 weeks and 4 days and im starting to hurt in my lower belly really bad and lower back pain and my belly will tighten and i will feel a twinge of pain that will take my breath away and make me nauseous. Should i call my doctor? Or is this Braxton hicks contractions?