- Combination pill
The combination pill is one of the most common contraceptive methods. According to studies it is 99% effective when taken around the same time on a daily basis.
People who might have to avoid this type of birth control includes smokers and women older than 35.
- Progestin-only pill
The progestin-only pills do not contain estrogen and are a safer option for smokers, diabetics, people with heart problems, and women in the breastfeeding period. This pill really relies on a time schedule. It should be strictly taken every day at the same time. When taken 3 hours later or more, you might want to consider using a backup method.
- Extended-cycle pill
This method works similar to the combination pill, but the main difference is that it only allows you to have a period once every three months.
- Vaginal ring
It is a flexible plastic ring that works by delivering estrogen and progestin, just like the combination pill. The ring is placed in the vagina for 3 weeks and then removed for 1 week in order to have a regular period.
Those we are smokers, women who have blood clots, and women with certain types of cancer should avoid taking this contraception.
- Diaphragm
A diaphragm is rubber made and dome shaped. It mainly prevents sperm from fertilizing an egg by covering the cervix. It should always be used with a spermicide. It is placed in your vagina by a gynecologist.
If you have weight fluctuations (more than 10 lb), and if you are prone to bladder infections, you should avoid this method.
- IUD
An IUD is a copper made device that is placed surgically within the vagina. It works by releasing hormones that prevent the fertilization of your eggs. It is 99% effective and has a duration of 10 years.
Women who have not given birth might need to avoid this method.
- Female condom
This type of birth control can also protect you against STDs. It is inserted deep in the vagina, placed over the cervix. Unlike the male condom, the female condom can be placed in the vagina 8 hours before sex.
- Male condom
It is the most common type of contraceptive method used worldwide. Prevents you against STDs and HIV. It is worn by men and it prevents the sperm from entering the uterus.
- Patch
It works like a sticker. The patch can be placed on your arm, buttock, or abdomen. It lasts for a week and works by releasing hormones.
10. Implant
It is the size and length of a matchstick. The implant is placed on your upper arm under your skin through an injection. This method is almost 100% effective.
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Source: http://www.health.com/health/gallery/0,,20354669,00.html