I've recently had a virus which gave me a stinking cold and fever for a few days, and now I have a phlegmy cough and wheeziness. Having asked around it seems this cough often happens after a viral infection.
My heart rate however is still about twice its normal pace. I tried doing some exercise to see what would happen, and the rate increased even further before returning to the same quick rhythm. My breathing rate is also very fast; I'm not sure if this is because of my fast heart rate or because my breathing problems are causing me to take shallow breaths.
It sounds like you have some type of tachycardia or rapid rhythm. Is there anything you are doing which could raise the rate such as smoking or drinking caffeine or any energy drinks? If not we could consider anxiety as a potential factor. In the absence of anxiety we should talk about rhythm disturbance. Drug effect(in case you took for cough and cold),respiratory issues can also lead to increased heart rate.
Certain things may contribute to a rhythm disturbance including dehydration or electrolyte abnormalities. I would suggest you drink a generous amount of an electrolyte beverage such as Gatorade for the next 24 hours. If your symptoms persist or if you feel chest pain, faintness, nausea or significant shortness of breath then you should see a Physician for a full physical examination and consultation.
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