Everything you need to know about contraceptive methods.

Although various techniques exist to prevent unwanted pregnancy, the combined oestrogen-progestogen pill remains one of the most common methods. Indeed, about 4 in 10 women use this form of contraception in France.

The contraceptive activity of these pills is attributable to two molecules: synthetic oestrogen and progestogen. This type of pill should be taken every day at the same time for 21 days, followed by a 7-day break. It is during this week that menstruation occurs, or rather withdrawal bleeding, which is less heavy than "real periods". Indeed, here, the bleeding is due to the sudden drop in hormones when the pill intake is stopped. If you take the pill correctly, you will be protected throughout the month, even during the break week! There are four safeguards to ensure its effectiveness:

1. The progestin thickens the mucus in the cervix, which hinders the passage of sperm.

2. Estrogens prevent the growth of the follicle.

3. The two types of hormones inhibit ovulation.

4. The progestin makes the uterine lining unsuitable for receiving a fertilised egg.

There are several generations of contraceptive pills, those of the 2nd generation are the ones that present the least risk of venous thrombosis, therefore they are to be preferred.