Hello, I am a 29 year old male. I have been having random chest pain, and pain in my left arm and hand for a month, it comes and goes. The pain is in different places at different times, my back, different parts of my arms, my hand, even my fingers and chin at times. I know this is a symptom of a heart issue, I regularly walk at least 5 miles a day. What could this pain be? I also noticed the pain got worse last night and I felt dizzy after I drank coffee, I was lightheaded and sweating for a few minutes. It went away a few hours later but I almost went to the ER. Is this a heart issue?