"i have had the mirena for almost a year, the doctor i had was amazing and explained it perfectly to. worse pain for about one second and a break and then even worse pain for about 1 more second. you can seriously count to 1 and it&#039;s over. i am someone that got extreme cramps before, and my cramping was bad first three months i spotted and cramped and hated it! but my bf (a doctor) told me to give it three months then decide so i did! and i&#039;m very happy i did. my only concern is i&#039;ve gained 45 lbs since the insertion, i&#039;m not sure at this point why? 4 months now i have changed my diet and work with a personal trainer 3-5 times a week.  fingers crossed i get my body back!!"