Slap your RO - stomach virus indeed!!!

Has he not noticed your husband is undergoing radiation treatment that makes him sick AND is on pain killers that make him sick AND is probably not getting enough hydration that makes him sick??? Regardless of the cause, your husband needs to manage his nausea somehow so get help from someone who is prepared to do something. Also a pain management team might be useful if the pain meds are giving him a hard time nausea-wise.

Just a question though - did the doctor tell you why a feeding tube not an option, or was he referring to a PEG specifically (as opposed to a naso-gastric tube)?

Also, is it correct that there is no chemotherapy component in his treatment? Your signature shows radiation only. Was the lymph node removal described as a biopsy or was it surgery to remove all the cancer?