Hi!
Please read my prior post: Mirena Symptoms: Immediate and Delayed. Yes, I identify. You reminded me that I too had chest pain, had an ekg...and I was fine. And, My throat. I had tonisilitis/strep so many times I actually got my tonsils out! I can't believe that both of those also might have been caused from Mirena! Good Luck....I'd have it out right away if I were you. I had mine out Monday!