what do you do in this situation

I found out I was pregnant and I did the right thing and told my partner. He's told me he doesn't want it and I'm really stuck at what to do. I wasn't on any protection as when I was younger I was ill and had tried for a baby in the past, so I geniuinly thought I was infertile. Ive had unprotected sex for the past 5 years and I've never had any worries. What do you do in this situation I'm so stressed out I don't know what to do