Well i had the mirena inserted in February and was excited about the fact that i would have less bleeding and possibly no periods @ that. 6 years prior to this I had originally had the Paraguard and was very happy with it until i separated from my partner and had it removed due to a new relationship. So anyways, after my marriage the only contraceptive that we used was condoms. I pretty much got tired of doing this..so i decided to have an IUD inserted again. I had looked into the Mirena and it sounded great! Well, since February, i've had a constant bloated feeling, i've gained 6 lbs. and work out everyday with a balanced diet. I am very disgusted and just couldn't figure out what could be causing me to gain weight. Well, I'm so glad that I fell into this site. Now i know what's causing it. I also have extreme breast tenderness, acne, and joint aches. So today I set up an appointment for next week to have the Mirena removed and a Paraguard IUD inserted. I did very well with this type and am going back to it. I never had an side effects with the IUD since no hormones are involved. My periods were heavy for the first few months, but after that it wasn't bad at all. So just thought i'd share my experience..Good luck to u all.