I had half of my thyroid removed two years ago. Mid way through last year, I woke up with an adrenaline rush and it lasted for months... until this past April, when I started to notice a slowing down in my energy level. Since April, I have been sluggish, my tongue is swelling sometimes, I am freezing all the time, I am extremely tired, body aches, and last week my hair came out in chunks and my voice has the horse sound it did two years ago when they removed the right half. My feet go numb when I run at the gym. Could I have overtaxed the half of thyroid I still had somehow?