I have been experiencing a hard/pressure tightening that's very intense in the middle of my upper chest. It only lasted less than a minute, but it's happened now 5 out of the last 7 days. I've also now had constant tingling in mostly my left arm, but both, and heart burn tonight. I went to the e.r. on sunday and they said I hadn't had a heart attack, but to see a heart specialist. I can't get in until next week, and this is getting worse by the day. I am scared I'm having some sort of heart issues though. It's not an issue of pain, it's intense ((very)) squeezing/pressure in my chest.