I'm 43 and about 2 weeks ago I got a weird sensation in my chest, the middle. It was a heavy tight feeling. I dismissed it and it did go away, however the next day I ate some popcorn and it came back, also after eating a variety of foods even licorice? I do smoke about 6 cigs a day, I am overweight, don't exercise and have a very poor eating habbit. I've tried antacids but with no luck. The heavy, tight feeling just won't go away and now I seem to have a headache along with it?