I have tightness in my chest, it feels like my heart is being squeezed off and on, but I ve had ekg s heart monitors and they say my heart is good and strong. I have a hiatal hernia, I dont know if that could be an issue or not, I never get heartburn or acid reflux. I also have a constant stomach ache, very slight, which may be due to the blood pressure medicine I am on, metoprolol 25mg