How common is pregnancy when you have an IUD? Experts weigh in. (Getty Images) An IUD, short for "intrauterine device," is one of the most effective forms of long-term birth control on the market.

There are five types of IUDs, all of which are more than 99% effective at preventing pregnancy. IUDs can be divided into one of two categories: hormonal and non-hormonal. Which IUD is best for you ...

The most common side effect after getting an IUD inserted is cramping. Hormonal IUDs like Mirena can make your period lighter and, in some cases, stop it altogether. Non-hormonal copper IUDs can cause ...

Copper IUDs are small, T-shaped devices inserted into your uterus to prevent pregnancy. The only available copper IUD in the ...