A bit of a rant sorry :/

I am 20 weeks pregnant with my second daughter have been with my boyfriend for three years my daughter is just over a year old this baby will be my boyfriends 4 child and since finding out we will be having another child I feel as thou he feels different towards me we both didn't plan this pregnancy nor did we want another baby it was a case of birth control not working even thou I took everyday never missed any. There has been a few times where he gets drunk and will be all nice to me and then of my belly is showing he will cover it up and tell me he don't wanna talk about the baby not look at my belly. I feel like he's a shamed of me even thou he says he loves me and still wants to Marry me, but it don't feel that way to me at all, he works 4 days a week 9 till 4 I am left alone with our daughter during that time and when he gets back all he does is spend time on his cell phone and doesn't tell me anything anymore I am starting to worry I am gonna end up doing this all by myself :/ and I have become very depressed over the last few days and talking to him don't work I have already tried :'( all I wanna do is cry