Hi welcome to the health care magic Here you are complaining of heart burn that could be from acid reflux disease .. If you are obese than loose weight that can be preceding factor... Avoid smoking if having habit of that .. Chocolate, coffee etc excess use avoided... For your symptoms pantoprazole tablet can be prescribed Head elevated by putting pillow below head while sleeping If constricting pain and reffered pain present than rule out cardiac cause by EKG.. For abdominal check up you can investigate with abdominal USG... If you want to do whole basic investigation than investigate with plasma FBS, serum total cholesterol, serum triglycerides and LDL, liver enzymes and serum creatinine and Tread mill Take care Consult physician for examination Hope your concern solved