I had my Paragard for 12 years and LOVED it. i currently have Mirena and love it even more.
I would be curious if the IUD insertion is coincidental to any health problems? Only way to tell would be have the IUD removed.
Paragard and Mirena are by far the best forms of birth control I have ever used. Unless my dh gets the big snip, I will have an IUD for a very long time.