I had mine inserted in August of 2008. Dr. attempted first insertion and realized my cervix was curved so had me take medication to soften it and come back for insertion the next day. Yes, it hurt going in (1 minute of severe pain) but comparing it to two painful births I have has plus severe cramps I used to experience monthly, it was well worth it for me. I have only had one side effect and that was feeling lightheaded at times within 3 months of insertion. Other than that, I have been pleased at my very light periods (four days with only pantyliners needed) and lack of cramps. I have not experienced any of the other symptoms many others have experienced and neither have the three people I know who have also had Mirena inserted and are happy with it. I am glad I did not read this board before having mine inserted because it would have steered me away from it and I truly feel that having had it put in, I am functioning well after experiencing 25 years of intensely painful periods and 10 days of heavy bleeding. I feel like a new person!