I have Fibro too...and have had the sumptoms for a few years. However, I am now diagnosed with Lyme too. Looking back, I have had Lyme longe than I have had the Fibro...so for me "the horse was...
A Herx reaction can make glands and lymph nodes swell. I am on 400 Doxy per day, 1000 cefyroxime, and Flagyl daily. I constantly have swollen glandes...but have had swollen lyph nodes in my arm pits...