Hi, I started taking levothyroxine 25mcg back on December 19th. I take it in the morning on an empty stomach. I had no idea what the side effects were, I didn t figure it mattered. I never have a problem with medicines. But, the last couple of days I have gotten a headache, tonight I m having a terrible getting to sleep And I just feel jittery. I was laying here trying to figure out what might be wrong and then I thought of this medicine. Could I be reacting to this med? What should I do, thanks for your input.