Information on getting an IUD

Annika
Hi so I've been on the pill for a year and I constantly forget to take it and so sometimes I have to double
Up and what it and I want something that's long term and doesn't require me to get it every month.I wanted to get information about the IUS which I'll be getting in three day so I wanted to know which ones you regiment what was your experience with the IUD and how the insertion and after effects where and if u continue to get your period while having the IUD in . do u notice the string and anything else hat I forgot to mention