What can I do to relieve what I think is sciatica pain-it is in the right side of my butt and hurts more when?

I move or press on it-like ouch when lying in bed. Are there some natural ways to address this? It just came out of nowhere. A hot bath helped somewhat, but soon wore off and pain returned. Since I can’t live in the bathtub, any other thoughts. http://bit.ly/nDeLa8