Baby fever again?

Okay ladies...

I have a 5 year old daughter and an 8 month old baby. I am just finally starting to feel like I have my body back and feel like myself. I am officially done breastfeeding and I FEEL GREAT! And my husband and I want another child but I would really like to enjoy at least 6 months of feeling good. But WHY do I have baby fever right now? Again? Omgggggg seeing all these bellies makes me want to jump his bones like right now and get pregnant again lol. Is this a biological clock thing ( were 29 ) or what is happening? Lol