I Have Back And Neck Pain Due To Compressed Disc

I have back and neck pain due to compressed disc problems including sciatic nerve pain.
I am gaining weight and am very diet orientated. I am unable to do much activity altho I do keep busy.
I have been on voltaren tablets for pain, but have been changed to mol arthricitic pain killers. I have also been on depression medication which I have stopped myself. I am also on blood pressure tabs and cholesterol tabs as well. I need meds for the back pain. which is crippling