I have a Mirena and have had it in for 3 years. I am happy with it and it's been a 'set and forget' thing for me, but I know of women whose experiences have not been as trouble free as my own. I also don't get any bleeding with the Mirena, although my 'cycle' as such has not completely gone. I would discuss it with your ob, as it can be a good option, but you might want to weigh up the risks and benefits with them.