30 weeks pregnant and not excited at all

I had just started birth control to avoid this and ended up pregnant anyway. My boyfriend wanted an abortion, but I didn’t at the time. I thought he’d change his mind but he hasn’t and he’s not happy because he feels I forced him into having a kid by not getting an abortion. He’s been great and amazing otherwise, except for anything baby related. Idk where we are going to live because we are currently staying at his grandma’s condo. She has been on vacation for months and is due back and he hasn’t told her about the pregnancy. Every time I start to get excited, I just see how unexcited he is and I become depressed and wish I hadn’t kept it. I just started a new job and hide my stomach because I don’t want them to know. I haven’t shared on social media, just close friends and a few people in my family. I’m worried once the baby comes I’ll have post partum depression. I guess I don’t have a question really... just looking for advice