"about 3 months after having my 3rd, my ob/gyn convinced me to try mirena. it&#039;s been 6 months now and i&#039;m so happy with my decision. i am back to my pre-baby size, my skin cleared up, and my periods are very light- typically lasting 1-2 days. i am still able to breast feed, it did not affect my supply at all. no problems with brittle nails or hair. i have never felt any pain from the threads, neither has my husband. the only annoying thing about the mirena was the horrible spotting i dealt with for the first 2-3 months. while insertion was uncomfortable, it wasn&#039;t painful. i love my mirena!"