Can you call 911 if your H pushes you? It depends...if he pushes you off the bed and you land on the floor, probably not. If he pushes you a second time, and you land on the floor, probably not. But, if, as you get back into the bed, you say, "what you are doing, is fast approaching what the local police would consider 'spousal abuse,'" and, then he pushes you again, and your head just happens to smack into the nightstand or other hard object, then yes.
But frankly, I'd stay away from getting the police involved unless it gets really violent. Why? Because of your son. You don't want him waking up to the police taking his dad out of the house.
Just keep getting in the bed...either he'll get violent, at which point you call 911, or he'll get disgusted and leave or maybe even stay. You know what? You could go through 1,000 predicted endings to this night, and you'd probably still be surprised. Just know that it's time for a change, and it's time to take your half of the bed back.
