Why Am I Becoming Very Weak With Throat Tightness That Makes It Difficult To Eat ?

hi, i recently have become very weak, for the last couple years offand on ive had throat tightness which makes it hard to eat i didnt have this symptoms until i stopped smoking marijuana and ciggarrettes two weeks ago, except for i had the throat tightness issue. my visison has changed its blurry and almost glowy, i have a very tight neck and my back hurts. i get extremely tired but my body wont let me sleep that long i woke up in a cold sweat before typing this i have the chills now too. i have been having this weird electrical feeling in my chest that radiates to my limbs. 3 years ago i worked out everyday and people thought i did steroids because my muscles blew up so fast. but i didnt do steroids. sometimes i get a weird metallic taste in my mouth, but all the doctors here say its anxiety! its just hard to believe all my muscles are stiffing up and after i eat i get real dizzy please help it feels like im going to die.