The Combined Vaginal Ring
The combined contraceptive vaginal ring is a small soft ring that you insert into your vagina. It contains two hormones, progestogen and oestrogen, similar to the hormones in your body.
The hormones primarily prevent an egg from being released each month. They also make it difficult for sperm to get to an egg and thin the uterus (womb) lining to make it difficult for a fertilised egg to implant there. The ring is kept in the vagina continuously night and day for three weeks and then taken out for a week if you want to have a monthly bleed. A new ring needs to be inserted immediately after a week to maintain contraceptive protection.