Back and hip pain

tabitha

I'm 24 weeks and I've been having bad pain/pressure in my lower back and hips and down the back of my thighs, off and on since 1:30pm yesterday. It's back again today and gradually wrapping around my lower abdomen. Is this braxton hicks, sciatica, or could it be something different? The only thing moving around helps is my hip pain slightly. I go to Dr tomorrow morning.