Have you ever considered that you may be suffering from tightness in your pelvic muscles? I suffer from consistent cremaster reflexs even though the situation does not necessary warrant it occuring, and have realized that my pelvic floor is extremely tense caused by stress. It's possible that after many years of suffering from pain as I have, your pelvic muscles have tightened as a reaction to protect yourself from pain. This IS curable. The only downside is the treatment, physical therapy etc. takes a long time in order for improvement to be shown. Give it a shot - it's not like we have any other choice.