"i had my mirena inserted on aug 14th and so far other than bloating and spotting, i&#039;m having a good experience with it. i got mine inserted at planned parenthood and it was uncomfortable but pain was similar to what i experience during pap smears, so not totally undoable. i&#039;m curious to know when those who mentioned it caused weight gain started to notice it? because i am already overweight and gaining lbs is not an option. just trying to get a gage on when i should stop checking the scale relentlessly for any change. thanks."