Everyone in my immediate family seemed to know about it before I did. I thought if you were manic you had to be euphorically happy all the time, so how could I have BP? I learned more about it, after the Diagnosis & it fits. People had been telling me for years (Ex's mostly, and I blew it off). Normal to doubt. Be proactive about learning more & your treatment. Lots of great & supportive people here on PC. I've had so many "me too" moments since joining - things I did that people also felt, experienced or did. You've been a member for awhile, so you maybe have had the same moments?
Good move going to the T

I hope it goes well & my best,