Fatigue, high heart rate, took excess thyroid

I took double the amount of thyroid (normal amount for me Armours 1..24 grains & I took 2.5 for 2 1/2 months as a mistake).  I have COPD and bronchiectasis.  My pulse has gone for 70 to 95 per minute, asthma is bad, and fatigue is terrible.    I did not have these before. Blood pressure is ideal and has always been.  My TSH, T3 and T4 are normal now but my symptoms are terrible.  I believe the excess thyroid has irritated the airways.  My spirometry is lower.  Doctors no nothing about this. I believe that there is still toxic or excess thyroid in my body.  I took charcoal but not until two months later.  I hope you can help