I am a 28 year old female.. For the past 2 years, on and off...I get this weird pain in my upper left arm...most times it feels like a tight muscle or pinch or squeeze, sometimes I get a burning sensation or tingling, but I basically always feel it. It doesn't 'hurt', but it is very uncomfortable and bothersome...I always think there is something majorly wrong with me, and overthinking the arm pain gives me anxiety! And that doesn't help, cause then I feel it more! It's a vicious cycle. When I first felt the pain, my doc sent me for MRI's and EKG's, but all the tests came out fine...I'm confused as to the cause, and paranoid as to what is really going on with my arm...anyone else experiencing this? Please give me your insight