sick 14 month old

[Nalaimpala]

My 14 month old son is always sick. He has a twin brother and he does not sick at all. On Easter weekend he was air lifted to a bigger hospital and then from there transfered to a pediatrics ICU. His white blood cells where 33,000 and they said he some kind of viral but they couldn't pin point it. They also said he has RAD (respitory airway disease). Hes been on a neb machine and getting albuteral and polmacort. Even after they sent us home it took lots of meds and even shots to get him over that and still to this day I think there is more to it. We've started seeing a allergist and tested positivie for milk and eggs.... hes on soy now and we avoid what we can but he is only a class two on these allergies. He pukes a lot and its scary when he does. They can't seem to figure out why he pukes and really want some answers.  The allergist said that if he is still puking in Sept. he would want to do and MRI and look at his brain. He beenn to the clinic so many time with problems breathing and rashes. He has like three kinds of rashes he gets. Now his legs are looking more and more bowed. I took him in for this and they said.... its "normal" and to wait and see if they straiten out. Is there something more I should be doing? Should I take him to a pediatric specialist or keep on with the allergist. Any adivise would be apprechiated!  Thank you!