Keep the baby or keep Fiancé

Last Thursday, my fiancé and I found out I’m pregnant. We been together for 13 years, but recently engaged. We already have a 4 year old and he says he doesn’t want anymore kids. He said this last year as well but then also said what happens happens and that it wasn’t 100% off the table. I’ve always said I wanted one more, he knows I’ve been saving our son’s old clothes this whole time. We have 2 full bins of old and new clothes from our son from 3 months -4T. I’ve always been vocal about wanting more. Now that we found out I’m pregnant he said he don’t want kids at all ! I don’t want him resenting me for keeping the baby and I know Ima feel like shit giving up what I want to. The morning I found out I said my fiancé if I kept the baby would he leave ? He said “idk but that’s pretty messed up to make me have a kid I don’t want.” I asked him yes or no and he just said idk. The first 2 days I noticed a change of behavior. Then over the last weekend things seemed more normal but he doesn’t acknowledge that I’m pregnant. I been nauseous and he came over and put his hand on my forehead. I told him I’m not sick sick. I’m pregnant. It’s like he thinks the pregnancy results were fake. Saturday and Mother’s Day he looked at me crazy because I didn’t drink. I don’t think he realizes how real this is unless he just thinks I’m automatically getting an abortion because our 1st conversation. To our son he’s acknowledged that I been sick but I can tell he don’t wanna acknowledge I’m sick because I’m pregnant.

The 1st few days he didn’t wanna cuddle with me or kiss me. Last week I had to ask the other if he loved me he said wth kind of question is that. The 1st day we found out I was crying and said fine I’ll get rid of the baby and was crying, the whole day we didn’t talk. We’ve talked since but it just seems like he acting like everything is normal. We’re back to laughing and joking and he’s back to giving me kisses. But today, I mentioned it again and asked if he would prefer adoption ( just wanting to see what he’d say). He said that’s out of question because he knows me and knows I wouldn’t do that. He said he doesn’t want anymore kids. He said they’re expensive and since our son is 5 and my fiancés oldest is 17 he said he’s done and just wants to start enjoying life. He’s 5 years older than me and keeps saying he don’t wanna be in his 50’s raising kids still. I understand because even though I want another, I didn’t wanna start over now that my son is almost 5 but I want this and now that I’m here I want to keep the baby. When my fiancé said he didn’t want anymore kids I said but you knew I was saving clothes, you asked our son “do you want a brother? “ and I’ve said maybe a sister and his response has always been “I can only have boys”. I mentioned how he said our son needs a friend.

I’ve told him I’m willing to do everything and pay for everything but he’s stuck on no and been firm. My best friend who is his cousin in law said I should keep the baby he’ll come around but I also don’t want him resenting me.