I have mild epilepsy, and I rarely (once or twice a year) if ever had a seizure. I began to have weekly seizures with this IUD which I have had taken out now. My heart beat is still heavy, although the adrenaline rushes which you have described have now gone though I believe I have severe hormone imbalances which I hope will get better with the various supplements I am taking. It is awful to read about the problems and time it takes for people to get better.