I'm out of ideas and so stressed. My sons height and weight are not even in the first percentile. His ped said he has failure to thrive and they're currently trying to figure out why.. We're waiting on blood work results but until then she has him supplementing with vitamins and drinking protein shakes at night. He has a peanut, egg and cows milk allergy. His ped said he can have dairy just not cows milk but he has had SO many yucky diapers. I think it's from the dairy but she swears it's not. Should I see another doctor?! Has anyone else's LO had this problem? They have me keeping track of his diet for a month (he eats SO healthy) but I can't wait an entire month to find out what's going on.