IUDs with more copper are more than 99 per cent effective. This means that fewer than one in 100 people who use an IUD will get pregnant in one year, and IUDs with less copper will be less effective.

Birth control prevents pregnancy from happening in the first ... Hormonal birth control, like a hormonal IUD, works by thickening your cervical mucus so it’s like cement and sperm can’t ...

When can I use an IUD? and so there's a string with the IUD that allows for bacteria to go up into your uterus and out the fallopian tubes and cause a possibility of pelvic inflammatory disease ...