Melissa-I have three children - my oldest son has CF. He was not diagnosed until he was almost two. We were always concerned about his weight, his eating, and his stools - but his doctors always seemed to have a reasonable excuse. From my experience, almost every mom I know has had a hard time getting doctors to listen to them about their concerns. Especially moms of childre of CF. Most people still think of CF as a "lung" disease. I think a lot of doctors don't know enough about the disease to know that CF is a complicated disease - there are over 1,000 mutations of the gene. And even children with the exact same mutations present the illness in different ways. Some have lung symptoms, some have GI, some have both.I brought my son's stools into his doctor for every check up between one year and two years. I always questioned her about his weight and his growth. We also worried about his stomach which seemed distended and bloated. Our doctor completely disregarded all of our concerns. It wasn't until we took Sean into see her partner that we started to make progress. The partner asked us questions and looked at his stools. Within five minutes, she told us that Sean was not absorbing food properly. She went on to say that there are many, many reasons for this. But she wanted us to bring him into the hospital for a sweat test. To make a long story short, he was diagnosed with CF within a few hours of his first test and "offically" diagnosed after his second the next day.I hope and pray that your son does not have CF. However, it certainly seems to me that your son is not digesting food properly and that your doctor does not seem concerned. I would ask for a second opinion - perferably within the same group - that way they will have your sons medical history and you will not have to waste time. Make a list of how often he eats, and for how long (both breast feeding, as well as any cereals, etc. that he might be eating). Also include the number and quality of his BMs. CF stools are pale, foul in odor, greasy, frothy, and huge.Again there are lots of reasons for malabsorption, but I hope you can convince your doctors to find a reason why. Keep on searching until you have your answers. Remember that doctors are only human too - they also make mistakes and/or overlook things. Trust your instincts - a mother really does know best.Good luck and please keep us posted. I will be thinking of you and your son.--Katrina Young, mother of Sean (almost 6 w/cf), Carolyn ( 4 1/2 w/o cf), and Allison (2 1/2 w/o cf)