Omg, JG...I'm sorry that happened. You must be reeling right now. From what you posted, this sitch has gotten pretty out of hand crazy. I'm glad you called the police. I'm concerned about the fact that your H feels he can go into your room and facilitate such harassment.
JG, please do what you need to and protect yourself and your son. I know how this works. This type of stuff tends to escalate, upping the ante each time. Ow does not sound like a mentally stable person at all, and I don't even have to mention your h state of mind. Whether it's just bully tactics or something more serious, it really isn't a healthy environment for you or your son.
I hope all goes well tomorrow when you press those charges.... And don't drop them afterward, like I once did. Big mistake. Can you press charges against both of them??