Advice/opinions on relationship

I've been in a relationship with my boyfriend for 4 months. Yes there is that close connection and all. Just sometimes I wonder if I'm making the right decision. He can be immature when it comes to everyday stuff, but when it comes to a baby and family he's extremely mature. He knows I've been through a lot, the biggest thing was an abusive relationship where I was pregnant and miscarried and cheated on. I'm just so nervous about a baby but at the same time I feel we could be great. I'm sorry for the confusing post I'm just so lost in the many thoughts that surround my relationship, any advice is helpful.