"i have had mirena for a little over a month now, and so far its been great! the insertion was very painful... much worse than people said, but this varies between people. i had severe cramps for a few hours after it was inserted, but after that they were mild for the rest of the day (and the next). i spotted for a few days, but that went away and there was nothing until my period. my period was lighter, but it lasted longer. it was basically spotting (slightly heavier than a pantyliner could handle), for seven days. since then, i&#039;ve had some sporadic light spotting, but its definitely manageable. as for other side effects, i haven&#039;t noticed any weight gain, mood swings, or a noticeable increase in acne, and i am prone to breakouts."