Forced Chastity

My girlfriend wanted to try lock me in chastity for a bit. I was down to try, she bought all the gear - a proper chastity belt, not just a cage. She locked me in it, we played around, she took humiliating photos of me, made me cross dress, etc.

It was all fun and games, but then... She never let me out. It's been two months. She only unlocks me to wash, and she keeps a close eye on me, and threatens to publish the photos she has of me if I make a fuss. I don't want to be in chastity, I'm dying to cum, I'm horny as hell, but she loves it. I've become so submissive out of fear of reprisal.

I don't know what to do! She's been making jokes about forcibly feminizing me and I'm worried that she's going to try it.