DRK,
Hubby worked thru week three of treatment. When the pain and inability to eat kicked in the beginning of week four he stopped trying to work. Narcotics = no driving. He felt pretty lousy for the next three weeks, lost his voice and was hospitalized for fever/neutropenia the last week of treatment. But, he bounced back, was working, off all pain meds, and eating by mouth two weeks after treatment ended.
So...like we all say..everyone is different.
Wishing you the best as you begin this journey.
Deb