What Causes Severe Chest Pain, Knee And Leg Pain With Nausea And Lightheadedness?

I m having severe chest pain squeezing, tight, heavy pressure feelings it last awhile, goes away comes back and I m having tight squeezing pain in my right lower part of arm along with pins and needles just in my right hand mainly my thumb. It has started in my right leg from my knee down pain and pins and needles right foot. Pins and needles just started on my left shoulder blade with no pain it s very brief only there. I m also fatigued, have nausea in the a.m., Lightheaded and no appetite. I m getting anxious not sure if I should go to the E.R.