hello Doctor, my husband has been sick for a while now, he has been admitted in three different hospitals but the Docters cannot find the cause of his illness. he vomits non-stop. he has been taken for different tests, like gastro-scope, c-scan, c-scope,mri-scope and x-ray but seemilgly nothing is found though all the symptoms says he has got cancer but the results states that he is negetive