Well, my suggestion is to leave the bedroom door open, that way you'll get less problems. Your cat doesn't understand why he can't go in there and be with you. If you let him in, he will most likely calm down and go to sleep. Take a few weeks to get used to him being there and you'll all relax.

If he's very active during night, Feliway might be a good solution. Try it! Please don't declaw him!

When I first got a cat, I said: He's not sleeping in our bed! What did I know!

Good luck!