Question about lower back pain while laying down? Just had a baby?

I don't know if it even has anything to do with it but the extra information might help someone to help me. I had a little girl (Addison) on February 28th of this year via C-section with a spinal. I was on bed rest since mid November. After I had Addison my lower back was a little numb but was told that was normal with a spinal. I went about my business since then and hadn't really had any problems but for the last three weeks by back is KILLING me. There is very mild discomfort when I'm standing or sitting but when I'm laying down to go to bed it doesn't matter if i'm on my side with a pillow between my legs, on my back with pillows under my knees, flat on my back or on my stomach, my back is in more pain then when I was having Addison. I hurts to move, talk, and breath if I'm in a laying position. When I wake up in the morning it will hurt for about half an hour while I start to move around. However, it hurts almost the instant I lay down and get worse through the night. I never took the pain medicine they gave me after my c-section because I don't like taking pills but I have been taking them for almost a week now and they help for about two hours but then I wake up with pain so unbearable I can't go back to sleep. I told my doctor about my pain and she didn't seem to think much of it and said it was probably from holding and playing with Addison. She prescribed me an anti-inflammatory medicine but it doesn't seem to be having any effect.

I am asking this question to try to get some advice on what I should do now. I would like to resolve this at home if possible since with the new baby expenses are tight.

If anyone needs any more explanations just ask and i will amend my question.