"i have had mirena for 3 months now.  insertion was unbelievably painful (i threw up and had to lay on the table with my eyes closed, pants still off, for almost an hour before i could even consider standing up). i bled very lightly but continuously for the first month but have now resumed a more normal (though extremely light) cycle. i rarely had cramps before insertion however now i usually have 1 day of terrible cramps (which subside only with 800mg advil). other than that i have had zero weight gain (i&#039;ve actually lost 5lbs), no acne (something i was worried about because i have sensitive skin) and only slight moodiness around the time of my cycle (i would get moody at this time before i had mirena, also). overall, a good experience."