birth control
"I used this for the full five years after having my 2 kids.  I had no side effects except perhaps that my weight stabilized at a higher weight than pre-pregnancy days. My husband occasionally said he could feel the string. At the very end of use I had night sweats and extreme weight fluctuations (up and down by 20  lbs). I recommend getting it removed as soon as symptoms start. This was very cost effective long term although initially a high cost.  When considering the monthly cost of other forms this was less.  In addition with no periods, there was no cost for pads/tampons or pain medication for cramping.  I'm now back on pills, but miss the Mirena.  I now have mood swings, motivation issues, weight gain, acne, and normal period issues."