I received my iud im October of 2008 it was a little painful when inserted but very quick and simple. I had a period for almost 2 months straight then it calmed way down and i had it every other month for 8-9 days but so light that i could wear a panty liner. i haven't had any children so my side effects may be different from some of yalls. I haven't noticed any hair loss but i have always lost lots of hair when in the shower. I have had major severe cramping the whole time, even now. I haven't noticed and mood swings or sleep issues or sex issues but i am also very young so. I have had at least 5 bacterial infections if not more, i believe its from the iud. That is my only real complaint it smells and is always pouring out of me. I haven't had a period for 3-4 months now except for a light spotting for a single day, which i love! i have felt it during sex maybe 3 times not bad though. i have noticed hot flashes but never thought of it as being the iud. idk though ive been pretty happy with it...