Pregnant and blood pressure.

So recently I wrote a rant about my boyfriends cousin living with us and how he doesn't help at all. All you ladies told me I wasn't reacting and I have to set a time limit he can stay so I can start working on the nursery. Well me and my bf have talked about it and were giving him about 4weeks to find a place. After that were kicking him out to start on the nursery for the baby. Well I am trying my so very hardest to just ignore his smart remarks, ignore his laziness, just keep doing everything I've Been doing and keep a smile on my face and let it go. But lately it is getting harder and harder for me to do. He always has something to say, always is complaining even though we're giving him a place to stay ALL FOR FREE , he really gets my blood pressure up. I can just feel my heart racing and my face getting heated. He just makes me so mad and all I want to do is just scream and tell him to get out but I know that's not the right thing to do but he is so disrespectful, so mean, and ignorant it just ughhhhhh. I really want him out of my house NOW I can't deal with it any longer and I'm not even sure how I'm going to tell him to leave. Any advice????