The agoraphobia makes this all a bit more difficult. You would probably be able to get a restraining order to get him out of the house. This may sound harsh, but you are not thinking clearly while he is there with you. For a restaining order, you'd have to go to family court and fill out some papers.
Cook County Circuit Court info on Domestic Violence Here's a women's service that will provide you with legal services]Chicago Order of Protection Project. Maybe they'll even come to your house to help you.
I know it seems drastic, but you are not thinking clearly right now. You have to get him out of the house, at least for a little, if only to get some sleep. After that, you should be able to figure out what to do. Call one of those phone numbers and do yourself a favor!