I'm.25 and have been having chest heavyness and pressure (not so much pain) in my chest mainly in the middle, sometimes left or right side or all at once, for about 4 months. It's constant when I'm up , and used to go away when I lay down. I used to get a bloated feeling from eating very little or even nothing at all. I feel shaky inside sometimes. But the main problem is the chest pressure and discomfort. I have had multiple hearts tests x-rays etc and doctors can't find anything wrong. They suspected gerd but its not. They then blamed.it on drinking alcohol.amd smoking but I've given up both about 2 months ago. So I've been told to go on a diet and try that. Just wondering has anyone else had this "undiagnosed problem" and tried eating clean and it's gone away ? No problem relating to heart or breathing. Help please