My boyfriend has NO ambition.. should i leave?

My boyfriend and I have been together for 3 months. He treats me right but we are not on the same level. I am in college majoring in nursing, I have one more year until I graduate. I am also pregnant but he is not the baby's dad. My child's father left me and I had to get a restraining order against him because he wanted me to get an abortion and was trying to hurt me. My boyfriend doesn't have a job, doesn't want to go to school and sits around and does nothing. I have my own place and my mother helps me with groceries, my bf stays with me and eats everything; he expects me to cook and clean after him and Im getting tired of it. I dont know how to tell him he needs to do something wit his life or im gonna have to leave, i want someone with ambition. How can I tell him without hurting his feelings?