Hi, I am a 42-year old male who has been experiencing sharp little pains on the left side of the chest randomly the past 2 days. I would describe the pain as sharp little "pulses" which last a maximum 2 minutes and then go away. The first time it occurred the pain lasted 2 minutes then disappeared. The pain returned 8 hours later and again lasted for about the same time frame; today, no pain all day until late evening whereby it made another 2 minute appearance, disappeared for an hour and then returned after I stood up and started walking; that episode lasted 90 seconds. I eat very well and walk 2 hours a day at a brisk pace. I have one glass of red wine (max) a day also. I am 5' 2" and weight 138 lbs. No accompanying dizziness, shortness of breath or pressure accompanies these pulses and the pain does not migrate. No family history of heart disease and I had both an echo and EKG over 6 months ago for palpitations, and the cardiologist said all was OK. His prognosis, and that of the MD I saw before him, was anxiety and I was prescribed Ativan. The only recent change was that I started training again with both free weights and calisthenics 4 days ago.Thoughts?