Scared about this pregnancy

I'm 20 years old my now ex is 21 I've had a miscarriage with him January last year and he repeatedly told me he didn't want it. Months go by after that and he told me he never cared about the baby and the miscarriage he was very drunk but what I've noticed is when people are drunk they are more honest. I just found out a couple days ago I'm pregnant again. He ain't trilled about it but I was on the deppo needle got it every couple months.still ended up pregnant again but I feel worse then I did last pregnancy I was really early last time before the miscarriage but this time I feel sick all the time got bad headaches got stomach cramps and my stomach is really bloated.

I do have an intellectual disability so that I've got a disability and having to do this on my own while the father goes and drinks all the time and just waste his life drinking and fking chicks. He said he needs time to process which I understand and have left it until he processes it but he said to me he'll be supportive and be there come to the appointments but he hasnt done any of that doesn't check up. I feel so alone in this I'm really scared and I just wish he would atleast be supportive a little bit. But hes acting like he doesn't care is starting arguments. I feel like I need to walk away but I grew up without a dad my father abandoned me and I don't want that for my baby I just I don't know what to do