I had the Mirena IUD inserted last Sept to control excessive menstrual bleeding and have been experiencing many of the side effects described (prolonged bleeding, upper respitory infections, breast tenderness, and numbness of the face, arm and leg on the left side which was told was Bell's Palsey without paralysis). I have recently been experiencing a chronic dull headache for the past 5 weeks. I tried the usual analgesiacs to help with the pain but none worked. My GP tried an antidepressant, allergy medication, anti-anxiety drug with no results. I've had an MRI done and am now off work for the week to see if this can help relieve my headaches. I have never been prone to headaches before having the Mirena IUD and after reading many of your experiences I just have to ask, can my headaches, although they are not severe, be caused by this device?