Thanks for providing more information.
As you describe most probably your symptoms are related to excessive cough and COPD.
Overexertion can be an aggravating factor.
So firstly it is advised to take proper rest and avoid strenuous activity.
Even as you have history of COPD which increases the risk of heart attack.
Sometimes heart attack can be silent as well.
So you need to be seen by your doctor and EKG should be done in your case.
If your symptoms'll recur then you shouldn't ignore your symptoms and visit ER for prompt management.
I hope this helps.
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