I recently had endometriosis surgery which they removed and they also inserted a mirena coil, after three days i started experiencing terrible shooting pains in the back of my head and constant headaches which i have now been getting all day every day for approximately 12 days. Ive been to the doctors twice since, on the second visit they decided to take the coil out as i had got an infection. The day after removal i have started my period but the headaches still continue. I need to go back to work on Tuesday and as i work on a computer all day i cant work with headaches over my eye and back of head. How long can this persist and has anyone else experienced this, its very worrying.?