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Intrauterine Systems (IUS)
IUSs are very effective in preventing pregnancy, but they do not give FULL protection.
A IUS is small plastic device put into the womb. The hormone, progestogen, is released to stop ovulation, and thicken cervical mucus to stop sperm meeting an egg. The progestogen thins the womb lining to stop an egg from staying there.
IUSs work for 5 years, but they can be taken at any time. The fertility level will go back to normal when the IUS is taken away.
Periods often become lighter, shorter and usually less painful.
Some light bleeding may be seen between periods during the first few months. Headaches, spotty skin and breast tenderness may be felt. There is a very small risk of infection up to 3 weeks after the IUS is put into the womb.