NUVARING
What is this?
This is a modern method of hormonal contraception..
It is a contraceptive ring that is two inches in diameter. The woman herself inserts it into the vagina for three weeks and takes it during the bleeding.
How does it work?
It constantly releases little doses of hormones that are necessary to prevent pregnancy.
Effectiveness: 98-99% provided you use it properly.
Additional information:
If the ring was out of the vagina for more than three hours in the period when you do not have menstruation, you should use some additional contraceptives during a week.