I agree. Also, I have Costochondritis often and it feels like a heart attack. But the GERD thing is very typical of this kind of pain. And sometimes you don't have heartburn. My husband gets a lot of left sided chest pain and he does have heart problems. But, they always say this pain is NOT from his heart issues. Could also be scar tissue from heart surgery.
Diagnosed with MS 2001. Fibromyalgia, Graves Disease, IBS, Gastritis, Spondylosis, Degenerative Disc Disease, Sjogrens, Osteoarthritis, Osteoporosis, Tendonitis, Costochondritis. All the autoimmune diseases are attacking me. Taking the minimum of medications.