"i have had mirena for a year now and i&#039;m loving it. insertion was uncomfortable, but not unbearable. i was up and ready to go as soon as my doctor was done. i had some cramping for about an hour afterward, but some ibuprofen and a heating pad knocked that out in no time. i had some heavy bleeding for about a week after, the light brownish spotting for about 3 weeks. the next 6 months i would have brownish spotting for about a day and a half when i was supposed to get my period, and my breasts would still get tender. since then no period, no pms, no period symptoms at all! i have gained weight, but i put that down to my own laziness as opposed to anything to do with the iud. my husband says occasionally that he can feel it during sex."