2 year old has swollen lymph node...has been there for 1 year?

I swear to god im not trying to scare you..but having sowllen lymph nodes for that long period of time can mean something more serious, like HIV. Maybe you should get checked. Im not trying to scare you, but it is a sign.

And with fatigue.. were it depends on were there at and how they look...please look into this.

Your body is fighting something a year is way too long you really need a doctors advice.