Can acid reflux cause chest pain?

Hello doctor,

I have been experiencing intermittent chest pain for the past two years. The first time I visited a cardiologist, he dismissed it as muscular pain due to poor posture and mild bronchitis. Last year, I had an episode of sinus tachycardia, after which I returned to the same cardiologist. He conducted an ECG, a 2D echocardiogram, a troponin test, CP-MB, and a stress test. All tests came back normal (troponin was 1.5 ng/L and CP-MB was 14 mIU/mL). However, I was referred to a senior cardiologist for further assurance. He did not feel the need for additional investigations but was prescribed Nebivolol and Amlodipine 5 mg (which has since been reduced to 2.5 mg/day). He attributed the problem to anxiety and described the chest pain as non-specific.

Midway through last year, I was diagnosed with grade II GERD. The gastroenterologist who performed my endoscopy stated that the chest pain was entirely due to GERD and was not cardiac-related. Two months ago, I experienced significant chest discomfort. The doctor repeated my ECG, troponin, and CP-MB tests. The troponin level remained unchanged at 1.5 ng/L, and the CP-MB was 5 mIU/mL. Despite all these investigations seemingly ruling out a cardiac issue, my symptoms are extremely discomforting and sometimes resemble cardiac pain.

I need to explain my symptoms in detail, so please bear with me. The chest pain mostly starts in the upper breastbone (on either the left or right side of the chest) and then radiates downwards and towards the sides of the chest (below the underarms). Sometimes it radiates to my left or right arm (but not both arms simultaneously) and my back. I also have a stiff neck. When I press on the sides of my neck, the pain radiates like a shock wave through my arm and breastbone. The chest pain lasts for minutes to hours. There are times when I do not feel any pain even after walking three to four kilometers, and there are times when walking just a few meters or climbing a few stairs worsens the pain. Sometimes the pain goes away with rest, and other times it does not. The pain can be stabbing at times, while at other times it is dull in nature. Many times, the pain is triggered by eating.

I recently checked my thyroid profile, and my TSH was low at 0.24 mIU/L, but my T3 and T4 levels were within the normal range. I have been experiencing clammy palms and increased sweating in my underarms. I have lost 11 pounds in the last three months and am experiencing increased fatigue, brain fog, confusion, and stress. I am really confused about my symptoms and need help.

Thank you.