--if you can get it; not many places do this and I don't know of an insurance plan that pays for it (still considered "experimental").

You might want to have your sacral spine imaged, though--too many doctors stop at the lumbar, as they think the sacral bone is so rigid it can be moved, but it can be, and it can twist and put pressure on sacral nerve pathways. You may also have nerve impingment/compression further down along the pudendal nerve, which eventually enervates the pervic/genital area and the ****, and which can become compressed/entrapped at a couple of areas along its progression:

http://www.pudendalhope.org/

http://www.pudendal.com/