How Can Pain In The Knees And Hip Joint Be Treated?

I fell and hurt my knee,sacroiliac late Dec. 2016. My symptoms are still increasing and I am finding it hard to do everything. I am a 70 year old woman, I am a psychologist and I love working, however I now don t enjoy anything due to the pain in my knee, sacral joint, hip, and back. In 2012, and 2013 I had an anterior and posterior spine fusion, L4/5 and S/1. My brain is foggy all the time and I could sleep forever. I am on gabbapenton, and nor on for pain, my Kaiser PCP diagnosed me with osteoarthritis. I believe I could get better if I were diagnosed differently. I feel like giving up. ( not suicidal.) just exhausted from the pain and disabilities from whatever is going on. Any ideas? I ve read your terms and conditions and I agree but I am not sure if there are fees for any part of this service?