I live alone in a studio apartment. I'm a 19-year-old college student. A man followed me up to my apartment and tried to come in. I pushed against the door and screamed at him and he backed off. I'm going to pick up some pepper spray tomorrow. What else do I do? I'm so scared. I come home around nine from work most nights. He could have come into my apartment, he was right at the door and now he knows where I live.