Feeling soo alone

I had an ectopic pregnancy during the summer and had to get my Fallopian tube removed now I’m pregnant again. I already have a 3year old but her father is saying he doesn’t want the baby after literally saying let’s have a baby for months now. I understand everything he’s saying he basically listed our circumstances and negative aspects but I don’t really want to just throw a baby away 😞. I know my life might be harder but I’m not afraid of being a single parent anymore after going through what I’ve been through already I’m so much stronger than I was before. I know I could do this. Im worried about how much support id have with two kids and bringing another baby in this world and the father not wanting to be in their life then I’d have to explain to them when they get older.