I Have had the Mirena for 5 years now.. I thought it was amazing.. no periods, no weight gain, etc.. but now my five years is up, now I have an appt friday to ge it replaced.. im worried. I cant go when Im ovulating bc for one I have no idea when that is consiering I have not had a period in 4 years. Also I am worried about weight gain considering they say the hormones are released at 20mg/ per day and the decrease at the 5 year mark.. which doesnt even make sense considering you only have it for 5 years. of course im worried about pain. I havent had hair loss but I am alo only 25 as well. I can be pretty moody but I cant blame mirena on that one lol. Any reviews from people that have had it replaced would be great! Thanks!