Back pain - HELP!

M
I herniated discs L1 and L5 RIGHT before I got pregnant. Recently the pain has become excruciating.. I lose feeling in my right leg and can't walk at times, I can't lay on my back AT ALL (absolutely terrified for labour now), my doctor just put me off work at 36 weeks because she thinks my body needs a break.. What can I do to help this pain? Any stretches I try lock my back in place and I get stuck, I've never experienced anything like this. I've tried ice, heat (bath and heating pads), prenatal massages, prenatal chiropractor, but it's just getting worse and worse. Any advice is EXTREMELY appreciated!!