Need help (roommate problem)

I am in serious need of advice or help, my boyfriend and I decided to help a friend in need he’s been staying with us since early November. He was living in Arizona and couldn’t get back home so my mom helped with a bus ticket and we provided him a place to stay but now I think I’m going to loose my mind he still doesn’t have a job, he drinks all the time and complains about everything doesn’t help out with anything in the apartment like dishes or picking up after himself I’m 29 wks pregnant and I don’t think I can handle him being here when the baby arrives I just want my apartment back but I don’t know how to go about kicking him out without being rude he’s still my friend I just can’t handle sharing a roof with him. How should I go about addressing him any advice would be awesome