Just a follow-up because so many of you were kind enough to post to my question.

John went to the doctor today and they found what they called a "pretty bad yeast infection" in his throat. I guess this is similar to what some people here have had although most of what I have read on this site is about thrush on the tongue.

After 10 days of declining energy, he actually woke up feeling more energetic today and now has a prescription for meds for the yeast infection which should also help things. The radiation oncologist told him the yeast infection could make him feel pretty sick, given he is still only 7 weeks post-treatment. The early morning mid-back pain on left side was attributed to coughing from the extra mucous brought on by the yeast infection.

Always takes me a while to get used to these reasons given by the doctors for particular symptoms, but I do feel relieved.

Thanks so much to everyone who shared experiences and information. You are truly wonderful.

Mary