Other forms of contraception are injections. They typically act in the same way as oral birth control, but as injectables, are not easily discontinued. They are based on estrogen or progesterone. They should be taken every month on the same day, or every three months, as is the case with Perlutan, which is appropriate for those who have recently given birth. In fact, women in the postpartum period should gradually resume contraception: if breastfeeding, use an appropriate method, and if not breastfeeding, use gentle formulas gradually.

Implants and patches are still new, but may be recommended because the risk of forgetting is low. However, they are still little used due to their high cost. The hormonal and copper IUDs are excellent contraceptive methods, and like the implant, require a gynecologist for insertion.

The morning-after pill is a relatively new option and should be used with great caution. It is equivalent to about a full pack of birth control pills. The morning-after pill is usually based on progesterone or levonorgestrel, a derivative of progesterone that prevents ovulation and, consequently, pregnancy. However, like all contraceptive methods, it is not 100% effective. Its effectiveness is increased if used within 12 to 48 hours after unprotected intercourse.

Withdrawal method is a less effective way to avoid pregnancy than contraceptives, but is still widely used by couples. It is not recommended because it can indeed result in a pregnancy, with higher chances than birth control. Generally, hormonal methods are 99% effective, while withdrawal is not even 30% effective. The pre-ejaculatory fluid released by the man during sex contains live and healthy sperm just like ejaculate. The quantity of these sperm is lower, which may explain the absence of pregnancy in most cases, but let's say it is risking an unwanted pregnancy too much.

The best contraceptive method should always be chosen together with a doctor. He or she can help with choosing the best pill and also with safe ways to prevent pregnancy. When in doubt, always talk to your gynecologist.

Photos: Amayzun, Derek K. Miller