"i had kyleena inserted a week ago and i love it so much. i have had problems with nausea while taking hormonal birth control (pills and patch), so my doctor told me about kyleena. i had it inserted on my period because that is when the cervix is most open, and it was definitely a little more than uncomfortable. it felt like more than a strong cramp... i would say it was close to a contraction (although i&#039;ve never given birth). i have a very high pain tolerance and i jumped out the chair a little bit, but it lasted for only 30 seconds. the first day with it kind of sucked. i had cramps all day and felt pretty crappy. the next morning, i woke up and felt fine. it even stopped my period early! i have not had any pain or side effects. love it!"