How do I get rid of STRESS?(is it a form of fibromyalgia)?

I think i have fibromyalgia becuz i have jaw pain,MUSCLE PAIN, strange pain everywhere, always tired, head-ahche's, light headed, blury vision sometimes(have to blink a few times to make it clear again) im pretty sure it is a SYMPTOM of FIBROMYALGIA(fi-bro-my-al-ja) and i know i am really stressed.! but i really want to get rid of all my stress, so much stress at school! so much homework, friends are abandoning me, I HATE HIGHSCHOOL!!!!