It's not healthy to go such long periods without ejaculating. Your balls look very swollen. There's a simple cure! You need to cum.
Oh. But your domme said you're not allowed?
She said being denied makes you a better slave.
She said being a good boy is more important than cumming.
Right. This is for your own good though. Start stroking and we'll see if you change your mind about what this domme of yours says.