I am a 35 year old male, 5 foot 6 inches, 160 lbs. My upper left arm has a dull pain in it, and it keeps me awake at night. The pain raidiates up and down my arm almost feeling numb. I have occational chest pains to where i can't harldy breathe. I have smoked for 20 years, and I am trying to quit. I do exercise and work out, but also have family, going to school, and work a job. Do i need to seek medical help because Iam very busy, but my family needs me.