Ive had a coil fitted and haven't had any children. Only get one if you have a regular partner as you are more susceptable (spelling???!!) to infections otherwise, I had one fitted nearly a year ago and have had no problems. The only thing Ive found is my period is heavier for the first day or two, but it doesnt seem to last as long as it used to! I didnt bleed after having it fitted or anything like that. And I would advise to get a normal one and not one with hormones as the whole point of a coil is not to put extra hormones in your body therefore messing it around!!! Hope this helps, sorry if it doesnt! x