I had a lump in my chest, up my neck, and it was very uncomfortable. A few months ago, I had an endoscopy once when I had reflux esophagitis, antral inflammation, HP bacteria. I took the medicine twice, but after that I did not see any improvement. On the day of re-examination, I got an epidemic so I couldn't go, now I feel tired and don't know what to do, what is the sign of chest pain?