birth control
"I have had the Mirena implant since August 2007. I did experience mild discomfort when inserted (sort of like menstrual cramps). I spotted on and off for about a month, and then no period for about a year. Here lately I have had a very very light period about every 3 months. Not having a period is great but I always worry if it's the Mirena or pregnancy so I do a pregnancy test every few months because I take antibiotics for acne (which is caused by the implant). I also have experienced some mood swings and lack of sex drive (which I didn't know were side effects until recently). This implant does have pros and cons, so you just have to really decide if you can deal with the cons to get the pros. Still not sure if I'll get another in 5 years or not."