Swollen glands under my armpits?

It started with one large marble sized lump under my arm and what I assumed was a reaction to my deodorant (according to the doctor, just swollen glands), so I made adjustments, even stopped shaving as much.
Now, over a year later the lump has come and gone and reappeared several times, it's even drained clear liquid a few times (that I know of) and has doubled. This is pretty painful, but not to the point that I cannot function.
-Concerned