Hi, I'm 40. had mine fitted end Dec. have had one bleed which lasted 3 weeks now due again but just having aching, ibs and nausea probs with cramping when moving out a chair or exercising.Last time i had that I was pregnant! Definitely have felt lightheaded, vertigo feeling and even visited an osteopath as thought it was my neck as had had lot of tension. Friend has one and said she feels fine & loves it! Got to give it 6 months she said. So I wait in hope that i will feel better. Don't miss the heavy periods, so thats a bonus! Have put on just under a stone in weight so that is annoying. All round tum area. think it probably affects us all slightly differently and all doctors have differing opinions. I will give it a bit longer, but no one should put up with feeling awful all the time. Listen to your body! thanks Jo