I thought I was going to die for the first couple of days after I had Mirena inserted. The pain was unbearable! I had to take Vicodin and laid in bed in the fetal position crying and fighting the pain and nausea. I thought, "What have I done!?" But, eventually the immense pain went away. But not for long. I have horrendous cramping before, during and after every period. I go through Aleve and Ibuprofin like crazy. Then, I ended up with ovarian cysts, I thought I was dying, it hurt. Now, after reading these postings, I realize that I have even more side effects to blame on this device of torture! I'm bloated, gained a crap load of weight, am bitchy ALL the time, I always feel exhausted, and wish I could disappear. I friggin' hate this thing. I have been thinking about having it removed for a while. I have now made my decision.
Good luck to everyone else out there dealing with the effects of Mirena!