chronic pain/ what’s wrong with me

I (17m) have had chronic muscle pain for 3 years now. How I explain it is that no matter what time or place, I’m always in muscle pain. No matter if I lay down, sit, move, stay still, try to relax,all the time. No matter if I’m at school or work or at home. I can’t stand for longer than 5 minutes, and I’m completely unable to play any sport because at the same time these pains started, so did something else that is very weird to me. I can’t exercise because anytime I try to I get extremely nauseous, my legs get weak, I get very dizzy, my vision get all blurry and I feel like I’m gonna faint, which makes it impossible to continue. The worst part is that my parents won’t see this as serious. Could anyone please help me to try and figure out what is going on. Thank you.