help me I'm jealous...

I really want more kids. Maybe not right away my daughter only just turned one one of my closest friends has two kids, one who is the same age as my daughter just found out she's pregnant. I really wanna try for another baby but ours is going through sleep regression, and my husband said he doesn't want any more if they're this difficult to handle. :/ so it's a touchy subject and I'm just sad and jealous. I'm really happy for her just.. I want to be pregnant too. Especially since we experienced our last pregnancies together. Our kids aren't very far apart at all. :( sigh I'm just venting.