I Am Worried About My Health

I have 6 of the 8 symptoms of chronic fatigue syndrome. I'm not sure if I should be concerned or pissed.

Fatigue.
Loss of memory or concentration.
Sore throat.
Enlarged lymph nodes in your neck or armpits.
Unexplained muscle or joint pain.
Headaches.
Unrefreshing sleep.
Extreme exhaustion lasting more than 24 hours after physical or mental exercise.