"i had the mirena inserted at my 6-week postpartum check up in august 2014. the procedure was easy, no worse than any other ob/gyn experience. the first couple of months, my period was abnormal but eventually i had little to no periods at all (which is typical). the only negatives i have about mirena is that it does hurt sometimes during sex if the intercourse gets a little intense. also, i am completely convinced that it is the cause of my weight gain. i had lost all of my pregnancy weight and plus some before i had it put in. since having mirena, i have gained 40 pounds."