Some information before I get started, I'm male, 17 and above average fitness.
At the start of the year my lymph nodes popped up (3 under my chin and groin) about 3 weeks after they did I popped to the GP. I was on ibuprofen high dose for a week didn't go down so I went back and had blood test, results came back clear. They never completely went they just shrunk to about 4mm across, but a couple of days they became quite big. Swollen on my left side of my neck, 3 under my chin and under both armpits it hurts to turn my neck shallow and I can't put my arms flush to my side because of the glands in my armpits hurt so much.
Over half a year since I first noticed them.