I hope you went to the doctor today, as was recommended by the other posts. I can speak from experience, that is nothing to dismiss as just "stress". I experienced some pains, knew I should get checked out, waited. Two weeks later, heart attack. Still being in denial, my wife drove me to the hospital. Only 39 at the time with a cholesteral count of 160. Now I have a stent. I survived what my cardiologist calls the "widow maker", LAD. Don't mess around. Get checked immediately. A crushing pain should trigger a call to 911. They can start treatment right away. If you do what I did, your heart can experience more damage before treatment can begin.