Suggest Remedy For Tight Chest, Extreme Indigestion And Fatigue

I have been having tightness/aches across my upper back with tightness in my chest, extreme indigestion when I eat like wanting to upchuck but don't,wake up in the middle of the night upset stomsch with sweats, don'tsleep through the night and this has been going on for a month now and today I am tired and off and on have been having bouts of shortness of breath,what's wrong with me? I am 75 yrs old , coronary heart disease, high blood pressure today was 158/63 heart rate 65