Can my wife legally kick me out of the house she, alone, owns?

My wife and I have been married for less than a year and we live in IL. We both live in the house she bought before we were married. Legally, my name is nowhere on the title, deed, lease. We've had arguments where there was shouting. I've been scratched and punched. I have only tried to get out of her way by moving by her. She has called the police and I (with the obvious physical injuries) have been told by the police to leave "for a few hours" and had to "call her to see if it is okay to return". If I have not been the physical or verbal aggressor, why do I have to leave?