try castor oil packs. look them up on google hit words edgar cayce castor oil.
I cured my back pain. This works for all kinds of muscle strain. Basically rub a thin layer of castor oil over the painful area. If it's sciatica the pain goes all the way up to your buttocks. It's a pinched nerve. Anyway, place a piece of white plastic over the skin and use a hot pad. To remove castor oil use baking soda and water on a paper towel. For my back it took two weeks and I slept with the castor oil pack, with no heating pad.

good luck