My spouse had that surgery in 2009. I know that you have been going through a living hell that never seems to end! I hope that you're starting to feel better.
Following my husband's surgery, I remember that he was very weak and had a headache that lasted for days. He had scar pain that lasted for years, but that's an unusual side effect, and a different neurosurgeon was eventually able to prescribe an ointment that took care of it permanently. Was the surgery worth it? I would say "Yes." His hemi-facial spasm was extremely severe and painful. His face would pull up to a severe angle. He had Trigeminal Neuralgia and facial tics. He had lost his sense of taste and had numbness in his nose, mouth and throat. He had to close his business and retire due to his condition, and go on disability. The MVD totally cured the TN and facial tics. He sometimes has spasms, but not to the degree before surgery. He regained feeling in his nose and throat, and sense of taste. Sometimes his mouth still numbs and at those times, he may bite the inside of his mouth enough to cause bleeding. He did regain a good quality of life and I hope that you will, too.