I never had heavier periods with the copper coil, I did have spotting in between but that was down to the polyp not the coil. One thing though, if you google the coil you hear all the gruesome horror stories! So better just to try it and judge for yourself. I actually took mine out myself, thought I was going to get into trouble with my gp but she was fine about it lol. As for it going in, it just felt a bit unconfortable nothing major