What do I do

Ok so I’ve been with my bf for 3 years and we have a 4 month old and next week he will be 5 months old. And so just now I asked if he could get me a can of cole that was in the fridge and while looking he asked if I had finished the liter coke he brought I think two three days ago and I told him yes I finished it yesterday and he made such a nasty stank face at me and I swear I felt some type of way. Even writing this I’m crying but also today I went to his work (a family job) with our son so his family can see him and while there he saw I have a bit of stretch marks under my arm and was saying wow I need to lose weight. And I got so upset cause he is basically telling me don’t drink Red Bulls or cokes but right now I think I’m stress eating which me and my siblings get. But I’ve been stress cause I’ve also been looking for a job and a daycare for two weeks but nothing and when he looked at me so disgusted I felt so bad. BUT he can drink all the beers he wants. He gets drunk everyday day and buys his beer and I’ve told him before to stop and that I actually told him I was gonna leave if he didn’t change and he said he would and only lasted a week before drinking again. I just wanted to tell him that that face he gives me is the same I give him when he gets his stupid fucking beers. I just don’t know what to do anymore I feel so sad now