Advice please

My bf used to drink a lot and it caused issues but we've moved past that, or so I thought. I'm 22 weeks pregnant and my grandad recently passed away so I just really need him to be there for me right now. I got home today at 3pm and he was passed out on the sofa with a crate of beer beside him and a pack of fags (I told him not to smoke inside but he had been). I told him to leave the house if he was going to do this but he went to bed. I then found out he'd stolen £20 of my birthday money which I was saving, he'd used this to buy it all. I told him to get the fuck out and he did. I just don't know what to do or say to him...