Binge drinker

My partner is a binge drinker and ever since I’ve fallen pregnant he’s non stoped being drinking everyday he’s not been there for me at all I’ve been really sick in this pregnancy and I thought he would change for the baby but no he continues to choose alcohol over his own child. Spends money on alcohol but when I want to spend $20 on something for me or the baby he cracks his shit I can’t do it anymore it’s exhausting and I don’t want my baby to have a dad like him he won’t listen he won’t even try he went from making an agreement to 2 drinks to now drinks how many he wants and doesn’t care about my feelings and I hate it I feel like I’m in this alone yet he wanted a baby too and acts like he’s single and what he says goes and what I say he laughs at. I don’t know what to do I have no family only his and they aren’t helping I just want my baby to have a better life then I did and I feel like I’m already failing as a mum