My 4 Year Old Has Been Gluten-Free For 2 Years But Still Seems To Be Very Small And Complains Of Muscle Pain in Parents, Friends and Loved Ones of Celiacs Posted December 12, 2010 · Report to Admin We found that my four year old has Celiac when he was 2 years old because he was not growing, hardly eating, hardly slept etc. He has been gluten-free for the last 2 years. I only cook gluten-free meals, and there is almost no gluten in our house. We are very careful and his school is careful.But he is very,very little still and he hates being small:( He has just started complaining that his legs hurt all the time.I give him a multi-vit., calcium, vit-D drops, and fish oil...what am i missing?? we live on an island out of the U.S that has very little blood testing options...if we are back in the States in the summer are there tests that you regularly have your child have. Any thoughts? What would you do? thanks for your time!!