I really need to vent. Ive taken my three year old to three diffrent doctors and one hospital with…

I really need to vent. Ive taken my three year old to three diffrent doctors and one hospital with stuffy nose and a swollen face. Nothing new has been introduced food wise and i use the same deturgent ive allways used. My poor baby is miserable everyones told me its "seasonal allergeis" but dose it really cause face swelling and itchyness and trouble breathing? Ive got an inhaler for him as well as meds but nothings getting better! They wont give me any diffrent awnsers and i dont want my child to collapse before they fix watever is making my poor baby sick!