Partner left me in June

Alyce • I'm a small bundle of hell all wrapped up in a blanket of star light and moon dust ♡
So I was with my boyfriend for 9 months. He thought he couldnt have kids, and with his history of being stupid (no condoms, lots of random hook-ups, ect) he was concinced he was unable to have kids because none of the others had ever gotten pregnant. Well, 6 months into our relationship, I ended up pregnant. He wasnt happy about it, but said hed stand by me and be there anyway. That was in April. In June, he tells me he cant handle life, hes not happy, and he leaves me, promiseing to still be friends and be supportive. For a few months, he used me and played games. In August, he got back with his ex girlfriend, and has basically cut me out of his life. Hes going to the baby appointments, but thats it. He wont talk to me or have anything to do with me otherwise. Idk if I should keep letting him go to the appointments or if I should tell him not to bother. I still love him, and im glad hes happy, but hes really hurt me and messed me up. Seeing him even just once a month hurts. He also wants a dna test to prove shes his daughter (she is. I didnt cheat on him) before hes willing to actually be there for her and support her. Im due in December, and Im lost on what to do or how to handle everything. He hasnt prepared for her in anyway, and hes left me to do everything on my own. Anyone have any advice?