A small plastic device which releases the hormone progestogen into the womb. This thickens the mucus at the entrance of the womb and makes the womb an unpleasant place for a fertilised egg to attach.
Pros
Cons
Can stay in for up to 5 years so you don’t have to worry about contraception during that time
Does not protect against STIs.
Can be uncomfortable to fit and the body can reject it.