Several methods of contraception are available. The method you choose will depend on your general health, lifestyle and relationships. Contraceptives available include physical barriers and devices, hormonal (oral, implant and injectable) methods, sterilisation, emergency and ‘natural’ methods.
There are several methods of contraception available in Australia, including barrier methods (male and female condoms and diaphragms), hormonal methods (pills, vaginal rings, implants and injections), intrauterine devices (IUDs or coils), female and male sterilisation, emergency contraception and ‘natural’ methods.
Protect against Sexually Transmissable Infection
It is important to practice safe sex as well as to protect yourself against pregnancy. Not all methods of contraception provide protection against STIs. The best way to reduce your risk of STIs is to use barrier protection such as male and female condoms and dams (a thin piece of latex placed over the anal or vulval area during oral sex). Condoms can be used for oral, vaginal and anal sex to help prevent the spread of infections.
Physical barrier methods
Barrier methods of contraception stop sperm from getting into the womb (uterus). Options include male condom, Female condom and Diaphragm.
This is a latex (or polyurethane) sheath that covers the erect penis and prevents semen entering the vagina. This is an effective form of contraception when used correctly.
This is a loose polyurethane sheath with a flexible ring at each end that sits in the vagina and collects semen. It can be inserted several hours before intercourse and is stronger than the male latex condom, though insertion and use may take some practice.
This is a soft, shallow rubber dome that fits in the vagina, covers the cervix and stops sperm from entering the uterus. The diaphragm must stay in place for at least six hours after intercourse and must be fitted and positioned correctly. Diaphragms must be fitted by a suitably trained doctor or nurse.
Intrauterine devices (IUD)
An IUD, sometimes known as a coil, is a small plastic device with added copper or hormones (Mirena) which is inserted into your uterus by a doctor. It can stay in the uterus for five to ten years (depending on the type used) and can easily be removed earlier if you want to become pregnant or are having problems.
Hormonal contraceptives – pills and vaginal rings
Hormonal contraception for women is available by prescription in the form of a pill (oral contraceptive) or a vaginal ring.
This is made up of synthetic forms of the hormones oestrogen and progesterone. The combined pill prevents ovulation, thickens cervical mucus to make it harder for sperm to enter the uterus and changes the lining of the uterus to make it less suitable for a fertilised egg to stick.
This contains similar hormones to the combined pill and works in the same way. A ‘one size fits all’ ring is inserted into the vagina and stays in place for three weeks. During that time, it slowly releases hormones that pass from the vagina into the bloodstream. It’s then removed and a new ring is inserted a week later.
This contains only a synthetic form of the hormone progesterone. It makes the cervical mucus thicker, which prevents sperm from entering the uterus. The mini pill must be taken every day at the same time and is not as effective as the combined pill. It’s usually suitable for women who either experience side effects from oestrogen or shouldn’t take it for health reasons.
Hormonal contraceptives – implants and injections
Hormonal contraceptives for women are also available as implants and injections. These methods are more effective than other hormonal methods, but may produce side effects and don’t protect against STIs.
This is a hormone implant that is inserted under the skin at the inner side of the upper arm. It contains etonogestrel, a progesterone-like hormone that prevents ovulation and hinders sperm from entering the cervix by changing cervical mucus. The device is inserted by a doctor under local anaesthetic.
DPMA injections (Depo-Provera/Depo-Ralovera)
These are long-acting (12 to 14 weeks) injectable contraceptives containing the hormone progestogen. They prevent ovulation, block sperm by thickening the mucus made by the cervix and cause changes in the lining of the uterus to make it unsuitable for a fertilised egg to stick. DPMA injections are highly effective and provide a very private method of contraception.
This involves blocking sperm by cutting the tubes they pass through from the testes to the penis.
Sometimes it is necessary to prevent pregnancy after sex, rather than before: for example, when a pill is forgotten or a condom breaks Emergency contraception, also known as the ‘morning after pill’, is a hormonal method of contraception that prevents or delays ovulation in that cycle. It may also stop a fertilised egg from sticking to the wall of the uterus.
There are different types of emergency contraception available. The most commonly used form, a single pill containing the hormone progestogen, can be prescribed by a doctor. Emergency contraception is best used within 72 hours of unprotected sex – the sooner within the 72 hours it is taken, the more effective it is. It can be taken up to 120 hours after unprotected sex, but will be less effective.
Natural family planning is based on an understanding of the menstrual cycle. Methods include monitoring cervical mucus changes, body temperature changes and rhythm or cycle calculations to help determine when a woman is most likely to be fertile each month.
The effectiveness of natural family planning varies in relation to whether one or a combination of methods is used. Confidence, correct use and effectiveness improve the longer the method is used. Natural family planning methods, however, do not protect against STIs.
If you have any concerns please come and see one of our Brisbane Doctors for the best advice
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