He wants my babies already.. ?!

I recently started dating this guy... He's very sweet and respectful. However there's one thing that I'm not sure what to think about. He seems a little obsessed with having a family. It's sweet that he wants a family with me but sometimes it's a little weird.. He talks about having children with me all the time and that he wants to get me pregnant. Mind that I just had a baby in November from my ex husband who cheated on me during the pregnancy. When he saw pictures of me being pregnant he said he's jealous it wasn't him who knocked me up.

I'm not entirely sure what to think about it... any thoughts?