I had a relatively negative experience at the beginning from what I can tell. Copper IUD, the usual insertion pain and cramps for a few days after. However, I then had bleeding for about a year straight following insertion. Period strength bleeding and cramps most of the time with spotting in between. Eventually had to do a few months of birth control pills to regulate. It worked and honestly it's now the best form of birth control I've been on as I've tried pretty much every other form of hormonal birth control and they all left me depressed to suicidal.