I'm glad you went to the doctor. That's the best thing to do. They have no further ideas for you? There is something called orchialgia. It is chronic testicular pain without a known reason. They now block a nerve to cut down on it which is a surgical procedure. I believe it is new and done at the Cleveland Clinic and Mayo. But I'd see a neurologist. I'd go back to a urologist and see if you they can come up with more ideas and if you need to see a neurologist as well since you have twitching which can often be nerve related.