IUS
An IUS (intrauterine system) is a small plastic device in the shape of a T which is fitted into the womb. It contains progestogen which it releases to thicken cervical mucus which makes it harder for sperm to get through and also prevents the sperm and egg meeting. If necessary it can stop a fertilised egg implanting itself in the womb. It works for 5 years after which time it should be removed or replaced. It is around 98-99% effective.
The IUS is fitted by a nurse through a straw like piece of equipment and is easy to remove when the time comes.
The IUS can make periods lighter and so less painful, but at first they can become irregular. There may also be temporary side effects such as breast tenderness but these should disappear fairly quickly. You should go for regular check-ups to ensure the IUS remains in place.
The IUS does not protect against STIs/STD's.
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