IUD Birth Control

Fatima
So I've been on the pill for a few months now but I recently started looking into getting an IUD. If you have one or have had one can u comment ur experience and also how is the sex with an IUD? I'm so nervous about my partner feeling the string and he is a very decent size so I'm scared he would feel it and be uncomfortable. Also, is the sex uncomfortable for you with an IUD or any specific positions? Please comment and let me know girls!! Xoxo