Abortion

​I've recently found out that I'm four weeks pregnant and my partner is now saying he's not ready to be a father and that he doesn't feel like I should continue with pregnancy .. I really want to because it's something we've always spoke about and I can't go through with an abortion, I feel like he's being really selfish and putting himself fist. I really don't know what to do because he's saying he doesn't want to lose me and that he really loves me, but I can't look at him knowing how he feels it just hurts me to the core and Don't know what to do. Any advice would be helpful