my son ray is 2 months old and they found the mutated cf gene in him newborn screening so i was tested and i am positive for the gene . his sweat test came out 64 not to high. but he has none of the signs that i was told to watch out for but the doc still put him on meds and the nebulizer as a precatuion.could the doctor be making a mistake my son is 16 lbs and 24 inches long at 2months and has an enormuos apitite. and his lungs have been clear every doctors visit . help i am so scared.