How to cope when baby’s father abandons you at 33 weeks..?

Long story short, he decided he doesn’t want this baby anymore today, 33 weeks in. He acted like everything was fine and I thought it was because of how good everything has been going lately. He made so many promises he was never going to keep. We’ve been together 3.5 years and known each other over 5 years. It’s not like I’m some random girl. How the hell do I cope with this.. I feel so lost and empty and can’t stop crying. I just want to scream but have absolutely no energy to do anything. Someone please give me some advice. 😔 should I try to convince him to stay? Is it even worth it? Should I talk to him more to change his mind? I don’t know if I can do this on my own.