i spoke to my hubbys aunt, who is also a nurse, and she said that it does happen every so often and as long as there is no pains in abdomen and no fever its okay. i am on the copper T IUD and i even though they say its ok to leave it in for 12 years total i think i might have them replace it at they end of this year, by then i'll have it in for 10 years.
The same thing has been happening to me people say its the birth control and to change up your birth control. But the only way to tell is if you go to the doctor.