Sorry you're feeling the brain farts from meds. Happens to us all. As far as the other thing, sounds like you need to kick him to the curb if he is not supporting you. Has he been with you to the doctor to let them explain things to him? Have you printed off information for him to read? If he is still not supportive after that, you need to find someone who supports you!
Hang in there! I’ve faced doubters as well, including my own surgeon until he saw it himself on MRI. I wish you a pain free future!