T.C.
Hi J.!
While I am no doctor I am going to give an educated guess that this is sciatica pain. Google it and see if that explains it better.
What I do for mine is lay on a tennis ball right on the spot in my bottom that hurts. It does hurt a little bit and as the pain goes away I will put more and more weight onto it. It fatigues the muscle and eventually will eliminate the pain running down your leg. I learned this technique during a year in physical therapy for an injury I had.
Another option although not sure how you would get in a good position is to have your hubby gently "Elbow" the spot and go in small circles and gradually increase the pressure. I do this for my hubby and a few friends when they have the sciatica pain.
I wish you lots of luck and hope you feel better soon! Blessings to you and yours!