Big questions already

So last night my oldest whose 10 asked me and his dad a question I did not expect this young. Now remember I got pregnant at just 15 with him and he knows that. He also knows his dad was just 16. He asked us what would happen if he became a teen dad. I asked more about it finds out the older brother of one his close friends just found out hes about to be a dad. I wasn't sure what to tell him.