I had my mirena removed for about 3 weeks and I feel great! I had the mirena put in right after I had my daughter. I lost a lot of baby weight then as soon as I got my mirena, I couldn't lose another pound! I loved having no periods but I kept wondering if the mirena was preventing me to lose anymore weight! I put it out of my head until I got really serious about losing the rest of my baby weight. I ate great and exercised everyday and my weight didn't budge. After the removal, I have lost 8lbs! I haven't exercised either! Go figure? I think it prevented me from losing weight! I have had a normal period now and I feel like a new person!!