I have the same problem. I wake up in the middle of the night because of back pain. It's like I was beaten with a tire iron. The very first thing when I wake up is to stretch my arms and legs. I bring my chin to my chest and move my shoulders forward to help stretch the muscles of my neck and back. Then I roll on my side with my feet hanging over the floor and use my cane to give me a boost. Gravity will pull you to a sitting position without using back muscles. Then I sit on the side of the bed and lean forward trying to stretch the back muscles. This loosens the muscles enough to get out of bed. I do use the cane to get to the bathroom.
While using the bathroom, I lay my torso over my lap and let my arms hang down. This continues to stretch those muscles out. When I want to sit back up, I put my hands on my knees and use my arms to bring myself back to a sitting position. By that time, I'm feeling a lot better. I take my ibuprofen and start my day.
I hope this will help some. I know that once I get moving I'm far better. Laying in bed is torture for me...even if I had a heating pad. Movement loosens the muscles, gets oxygen to them, and this causes less pain.
God does not give us a spirit of fear, but of power and of love and of a sound mind. 2 Timothy 1:7