A month after getting mirena i started having anxiety attacks and a seizure. I thought it was a combination of the high stress at home and work.Well since my seizure i have had headaches on a daily basis. Recently i started experiencing rapid heart rates. I read up mirena symptoms and it only matches with my headaches. So i researched other peoples actual symptoms and they were the same stories. Since yesterday afternoon my heart had been beating super fast. I feel like I'm on drugs. I can't wait for the dr office to open so that i can get this damn thing taken out. I'm just afraid of getting worst once its out. As some people have reported.