Iud - intrauterine device
an iud is a small plastic and copper device which is put into the womb by a trained doctor or nurse. It prevents sperm from meeting the egg, or may prevent and egg from settling in the womb.
All iud's have soft threads which hang down in the vagina so that the woman can check that her iud is in place.
With the iud you don't have to think about contraception and it doesn't interfere with sex.
The iud works as soon as it is put in. After being fitted with an iud, your periods may be heavier, longer or more painful. Infection of the womb can occur and you should therefore have regular check ups with your doctor or nurse. Depending on which type of iud you have, it will need changing every 3 to 10 years.
The iud can be taken out any time by a doctor or nurse when you no longer wish to use it. It is suitable for women who already have children.
The ius
intrauterine system
is a small plastic t-shaped frame which is inserted by a trained doctor or nurse. The ius contains a hormone sleeve which gradually releases a very low level of the hormone progestogen (one of the hormones contained in the pill) into the womb.
The ius works by thickening the mucus in the neck of the womb, making it difficult for sperm to enter the womb. It also changes the lining of the womb so that it will not accept a fertilized egg. In some women it also prevents ovulation.
The ius has 2 soft threads which hang down into the vagina so the woman can check the ius is in place. Your doctor or nurse can replace the ius every 5 years, although it can be taken out any time. After removal there is a rapid return to fertility.
Periods may be irregular for the first 3 months, after which they generally become much lighter and shorter, or you may have no bleeding at all.
During in the first 3 months other side effects may include tender breasts, headaches, or acne, but should disappear after first few months.
The ius can also be useful if you normally have heavy periods.
* both can usually be fitted 6 weeks after giving birth and the ius (at least) can be used while breast feeding.