HELP!

So I’ve struggled with infertility for a few years and after my divorce i had kind of decided i didn’t want anymore kids. My handsome 5 yr old would be just fine as an only child.. well me and my current boyfriend had a few uncareful nights and i got not one but FIVE positives. He’s now singing the “I’m not ready” tune and I don’t want to have an abortion. I struggled having a baby for a few years with my ex and now i finally have the possibility of a second baby and he doesn’t want it. I’m in no position to be a single mom to 2 kids but i can’t imagine not having this baby. I found out yesterday I’m 6 weeks and 2 days... i really am stuck here. HELP 😭