I too have had lymph node problems the first was around the time i started having panic attacks and feeling ill,i had some come up in my groin area that never went away,that's aver 11 yrs now,no doctor can explain this,only telling me it's fine as they are not that big.
But there must be a reason that they showed up,meaning the body is putting up a fight with some kind of invasion.
Well if after i have amalgams and chelate they dissapear,then i won't really need an answer.