Welcome on HCM!
Regarding your concern, I would explain that it may be a real expression of excessive anxiety
episodes. As your chest complains doesn't let you taking deep breaths, it is more likely to be due of that. This explains also the appearance of tachycardia
Nevertheless, I recommend performing a careful medical check up by your attending doctor including a careful physical exam, a resting ECG and some lab tests (complete blood count
to investigate for possible anemia, fasting blood glucose
, chest X ray study, blood electrolytes level, and if necessary a cardiac ultrasound
Meanwhile, try to engage in more outdoor recreational activities, more physical activities, less stimulating factors like caffeinated drinks, avoid close smoking contacts, etc.
Hope you will find this answer helpful!