Dear Puppylover --
I noticed that you hadn't received an answer to your question. Swollen glands and fatigue are just two of the symptoms shared by sufferers of CFS and FM. Symptoms of IBS is another that is common for both diagnoses.
In my personal opinion, they are one and the same. I believe that often the Fibro diagnosis is because the pain is more the primary symptom in comparison to the fatigue. For each sufferer, the particular symptoms that are most troublesome for them may be different from another sufferer. I also feel that some doctors "believe in" one malady and not the other.
Take care and good luck. ~*~ Karen free2bfree