Eli is so little!

I'm thinking of getting a second opinion on Eli's weight. The doctor keeps talking about celiac disease and cystic fibrosis...I really think that Eli is just a small kid and very active and healthy. Does my "girth" make the doctor believe that I was a 90 lb. baby and would therefore have a 90 lb. baby of my own? Really? So, after cold turkey quitting the whole breastfeeding thing (more painful than imaginable), Eli is eating more solid food and SHOULD be gaining weight. Hopefully.