Hey Tim,
We hadn't heard that the weeks after were the worse till about week 5 or so of treatment; a dr made mention of it. Well that sure concerned my Dad. However here's how it was for him. The last week of radiation and the week after were the worse; he had lot of phlegm; and they were the only 2 weeks he took pain meds throughout his entire treatment. From there on he started improving. You'll be amazed how every week you can see and feel changes for the better.
By the end of 2 weeks out from treatment he was 'starting' to test foods by mouth again.
Like Nelie pointed out; you won't be going to rad daily, so just being in the comforts of your own home and relaxing more will help.
Hang in there!
Lisa