Hi I am a 19 year old female, and am worried that I might symptoms of heart disease. A few months ago, I have experienced serious heart palpitations(which seems to have died down recently but comes back every once in a while), and I have been experiencing quite severe upper back and neck pains. Very recently, I have also been experiencing indigestion and diorreahea. I googled these symptoms, and every website that I go to points me to heart disease. I have had blood tests early this year, but the results were fine at that time. Could I possibly have heart disease??? I am worried.