M.M.
I got the Mirena IUD after my doctor recommended it almost 5 years ago. I haven't had a period at all. After insertion I cramp slightly, nothing severe, and had light bleeding for about 2-3 weeks. I have recommended it to several girls and they love theirs. I go this month to have mine removed and reinserted because it is the best non-permanent type of birth control ever!! NO MONTH TO MONTH WORRIES!! - - GO FOR IT!!! :)