My husband and I believed we couldn't have children biologically and worked with an agency to adopt. Shortly after we made a match, I found out I was pregnant! My ds is only 11 months and my dd is 3 weeks. I am breast feeding her. Now my ds tries to find a way to my breast. Our pediatrician think he craves the attention and is advising I also nurse him. I'm torn...he's at an age to start weaning him not to start nursing him. What do you think?