Ladies help please I need advice!!!

So I have a 18 months old baby and my fiancé acts like a kid sometimes. This past Friday we were supposed to go get beers for my son god mother. She was having a party on Saturday. And also I had to run some errands before that. He usually finish work around 3:30pm and he gets home not later than 5pm because yeah sometimes he finish at 4 well that’s what he claims. So, he comes home at 6pm saying the train got stuck. But he is drunk so I’m a little upset bc is late and I’m pretty sure they close early at the deposit. But I’m more upset bc I was supposed to meet someone a little after 4 pm but it was more than a little late. So, his coming tru the door and is screaming. Saying if I can’t wait he already told me his coming and that he is here. I was so worry about the drinks bc been me I don’t like to disappointed people since they counting on us. But since he says I bother a lot and he is tired he walks away and leaves the house. He said he was done and leaving. Again been me and knowing he is drunk I ask him for the car key he hands me the keys and leaves. So I wait for him to come back he knows there is always someone home. We leave with my parents and siblings. It was 12 midnight and he never came back. So, now I realize he isn’t coming back and since he thinks I’m a crazy bitch I cancel his cell phone bc is one my name yes he gives me the money bc I’m stay home mom. But let me say I have to be reminding him all the time about the money to paid the bills bc he doesn’t know how to manage the money. Saturday comes I have to go to church because my son god mother is baptizing her kids. Apparently he forgot that we made commitment. And plus I have to run more errands and go to my sister in law bc she’s having a dinner which she told us like a month ago. We say we were going so we have to go both place and then the party is at night. He never came back and I didn’t know what he was doing with the beers. I went to church and I didn’t know what to say bc he isn’t there and the beers were supposed to be there on Friday bc that’s what we committed. I try to run my errands and thank god I have my mom to watch my son. I finish and go to my sister in law good thing she knows how he is. The. Surprise he gets there with my brother in law. Then when I’m leaving he is asking what we doing. And at this point I’m all heart broke like really I come here and you decide to talk to me but if I don’t come you keep going like nothing happens. And he is mad bc he complains I thrown him out. I took the keys so he had no way to come back. Well I decide to just no argue with him bc we going no were he thinks I’m the one wrong. He doesn’t seems nothing wrong on his behavior. I just let him come home with me bc is a 40 minutes drive and I don’t drive like that I get a little nervous sometimes. But I don’t know what to do? He doesn’t talks to me about what happen he just acts like nothing happen and we ok. And we not ok. At least not for me. Bc I know he went drinking and now I see that he told two of his friends we were done. And plus he call his female friends for what I don’t know. I told him about it and he deleted the history. I want him to leave so bad bc I don’t trust him like that. His behavior is so childless. Instead of him talking to me about our problems he goes drinking and talking to others. I love him and I really wanted to married him and have a happy family. But I don’t know if is worthy. Why he left? Why he didn’t stay with us? I feel like he doesn’t love us. I’m sorry ladies for the long post and for my English but is my second language. I hope ya. CAn give me some advice because I feel like I’m gonna go crazy thinking.