Tell your doctor about your symptoms and then ask for an ECG. You want to know if you have an underlying heart condition. Depending on what you find, there may be options that will eliminate your arrhythmias.
Anecdotally, I also had arrhythmia and after a few months and visits to doctors I figured out it was the type of coffee I drank. Changed back (from Espresso so standard) and the arrythmia was gone. YMMV
I agree, if you think you are having arrhythmias you should see a cardiologist as the first step. Try to exhaust the well-known medical avenues before considering that your health problems are from an unknown cause. Strep infections in particular can have cardiac effects (rheumatic heart disease).