i want another baby :(

I have a daughter who is 2 and a son who is 7 months. I recently had a pregnancy scare but once my period arrived I was abit devastated and come to relise I actually wanted it to be true..

My partner has four others that he doesn't get to see unfortunately, and he doesn't want another one, I don't know what to do or how to out aside my feelings to respect he's? I was going to talk to him but maybe it's best to just leave it? I would love another one and i know it's so soon but I can't shake the feeling away.