Ladies HELP !!!

So I’m 20yrs old. I’ve been on and off with the same guy for 3 years. He’s now in the military and just moved to California about a month ago. I’m in NY. I found out he had a tinder and was messaging girls, etc so i flipped out and of course I’m “crazy”. Long story short, we broke up.

The next day I took a pregnancy test and of course it was positive. I told him about it and he immediately said he wanted to get back together, work this out, how he loves me so much, so forth. Even brought up marriage. I’m almost 7 weeks. I had an ultrasound and saw it’s heartbeat and everything.... i sent a picture of the ultrasound to the dad and he’s switched up completely. Asking why I can’t just get an abortion & how I’m ruining our lives, I’m stupid for keeping it, how he actually hates me and doesn’t want to be with me and I’m the most annoying person he’s ever met. How we should just break up and he’ll just pay child support. All of this terrible stuff. Im so hurt and so lost. I don’t know what to do..... I’m so stuck. I don’t know if i can raise this baby on my own, without a dad. I also don’t want it to have a dad who hates it or neglects it....