"after reading all of the reviews, i was very scared about the insertion pain. i have been on skyla for about 2.5 weeks now. the pain was short lived (strong pinch), maybe 20 seconds. after 5-10minutes of being in the room, i left with 3 years of 99.9% effective birth control. definitely worth it!! mild cramps after insertion, and regular /light period. menstrual cramps are new for me now, although i just got my period back after having my 1st kid. i am 20 years old. also a little moody, but probably due to pms and cramps!"