Back labor?

Samantha • 💙👦🏻04-18-16 💜👧🏻11-09-18

I have such horrible pain in my lower back and into my butt and hips. It’s hard to walk because my legs feel numb. I also feel extra wet in my underwear, but don’t seem to have extra discharge or anything and I don’t feel water trickling out or anything. How do you know you’re in back labor? I’ve had bad sciatic pain this pregnancy but it’s never lasted for hours and hours.