I think I might just be crazy... 4th baby?

So I just gave birth on September 6th to my second daughter (3rd child). Well I have baby fever? What the hell is wrong with me? I don't know why I feel this way it has to be hormones. I hate being pregnant but seeing my daughter's face has given me baby fever I believe. My fiancee and I have talked about #4 but not right now at least a year to two years. But I just don't know why I feel like I am nuts. There is no way this is right lol. Ask me 2 weeks ago I would say I was over it, now I am thinking about another.