Hi:
I also started having chest pain at your age 28, and I had every test imaginable and was told to see a shrink. It turns out that I have Small Vessels Spasms. I was diagnosed at the Cleveland Clinic in 2012.
It took me 36 years to get a diagnosis. I had a Heart Attack at the age of 63 years old. The spasms caused the heart attack but no heart damage. I would definitely call Cleveland Clinic Heart Department and make an appointment to see a Cardiologist. My Cardiologist at the Cleveland Clinic in Ohio is Dr. Stephen he is very familiar with women’s chest pain. I even went to the Mayo Clinic when I was your age but no diagnosis at that time. Women with chest pain and clear arteries is not something to fool around with. I am not saying you have SVS, but you definitely need to see a Cardiologist that specializes in women with chest pain and have all normal tests but continue to have chest pain.