If it helps you, then your difficulty would likely be muscular. when MS left my back twisted to one side, I used forearm crutches and ibuprofen, but the ibuprofen for only 5 days. Long term use of ibuprofen is not healthy and in women European studies point towards hearing loss.
The naproxem sodium (Aleve) might be something to consider too, though again not long term. It has been shown to be more effective in women than in men.