Though an intrauterine device (IUD) is an effective contraceptive device, it is still possible to get pregnant. It is rare with an incidence of 1 in 100 women with an IUD and the risk is highest during the 1st year of insertion.
If a woman gets pregnant with an IUD, it is important to quickly make an appointment to see a gynaecologist. The reason for this is that an ectopic pregnancy (pregnancy occurring outside the cavity of the uterus) is more likely if an IUD is in place. This is a medical emergency that requires immediate attention.
If the pregnancy is non-ectopic and viable, removal of the IUD is usually recommended as the risk of miscarriage is increased 40 to 50%. There is also an increased risk of infection and preterm delivery. Conversely, it's also important to note that there is a risk of miscarriage when your IUD is removed but the risk is lower than if you leave it behind.
Therefore, it is important to make an early appointment and have a detailed discussion with your doctor regarding the management of this uncommon medical event.