Especially because of your abuse history...this is just horrible that your husband would invade your boundaries like that.

First suggestion - I know this sounds dumb - but maybe different pajamas? Something a little tighter that he couldn't get into. Maybe like sweats with a tight waistband...I dunno.

Second suggestion - as others have said - call the cops. Even if you are married, that does not give him license to do this. A sleeping person is not capable of giving consent. That makes it rape/molestation. Now...you may or may not actually want to take him to court - but simply calling the cops might make him realize just how bad this really is.

And if it continues, you may just have to sleep in a seperate room until he can promise to keep his hands off. Or...maybe get one of those bed rails (like for kids beds) and put it in the middle of the bed to kinda create a barrier.

Tell him that it is NOT OKAY. Remind him of your abuse history. If he keeps it up, that is just wrong. He needs help.