Don’t want his baby

Hung out with my ex 6 months after we broke up. We had a bad break up l but we recently started hanging out and talking as friends.We had sex for the first time since our breakup With a condom . Neither of us still had enough feelings for each other to get back together and agreed that was a one time thing . After sex I noticed I was more wet than usual but thought maybe cuz we haven’t had sex in a while I was extra wet... Layer on my period was late and I found out I was pregnant. I’m like tf we wore a condom. So I call and ask if the condom broke or whatever and he’s like nope I took it off while we were having sex. Y’all I can’t even describe how mad I was . I eventually calmed down 2 days later after crying my heart out and told him I was pregnant. He was so happy and he’s like i told you was gonna put a baby in you and I got mad again and blocked his number . He called me off his potna phone and I blocked that too. Idk what to do . My first appointment is tomorrow ima go but I don’t want a baby with him.

ADVICE ??

Do I let him be a part of this pregnancy? I feel so violated