Has anyone had heart palpitations while using the mirena iud?

Yes!! I got my IUD placed in Dec of 2015 and thought it was a decent choice at first but after a few months of my body adjusting it all went to hell. Constant fatigue and dizziness. I am currently being monitored by a cardiologist, wearing a halter monitor and taking 100mg of beta blockers to keep my heart rate down after 3 ER trips and one admission. I don't know for certain that it is abuse by my IUD but I have a gut feeling it is. Getting this thing removed on Monday and praying K have the same outcome as many others have. Side effects go away!!!