Stomping feeling in lower back

I've had lower back pain like someone is stomping my lower back since about 4:30 this morning and pain goes around my right side to the upper part of my belly. Is this a form of Braxton hicks? I haven't had any yet but this pain is pretty consistent. I called the doctor and he said just try to relax and come in if it gets worse. Anyone else had this? Almost 34 weeks. Ftm