I had the same issue. I had mirena taken out in April and most of my pains went away, but i've been left with a neck that feels like i've been in a car crash, back pain (middle and lower) that reminds me of the labor pains i had with my son, and this constant leg (thigh) pain. I recently went to a chiropractor and he took an xray of my neck. My neck, which is supposed to curve like a C towards my face, is completely straight and has begun to curve the opposite way. Apparently, it's caused by muscle spasms and since mirena attacked every muscle in my body, i can't help but think that it's all related. Any one else having this issue?