This contraceptive injection halts the release of egg by the ovaries and thickens the cervical mucus to make it difficult for the sperms to reach the egg for fertilization. The injection also changes the lining of the uterus and makes it hard for a fertilized egg to attach or implant itself to the uterus wall. The injectable contraceptive birth control method is 99.7 percent effective. The injection is usually given in the upper arm or buttock muscle.
The injectable contraceptive starts working immediately when it is given during the first five days of your periods, up to seven days after a miscarriage or abortion and when you are on other hormonal contraception. In other times, the injectable contraceptive will take at least seven days to start working. You can use condoms or other contraceptive measures during those seven days.
How long will the effect of the contraceptive injection last?
The contraceptive injection will be effective for three months and you will have to take another injection after three months to maintain the effectiveness. The effect of the contraceptive injection cannot be reversed after those three months. The contraceptive injection can be used during breastfeeding and in some women, it may reduce painful and heavy period bleeding.
When will you be fertile again?
Your body sometimes retains the hormone for more than three months after the injection and it can affect fertility as well as your menstrual cycle. Usually the fertility returns within eight to 12 months from the last injection. Your menstrual cycle may take many months to return to normal but you can be fertile and conceive before you start menstruating again. So, it is advisable to use other birth control methods as required.
What are the side-effects of using contraceptive injection?
Use of contraceptive injection can have many effects on a woman’s body and these changes or the side-effects may continue for a period of three months or more.
Weight gain: The hormone injection can increase your appetite and cause an increase in your body weight.
Change in bleeding pattern: The bleeding pattern may change with the use of contraceptive injection. If the injections are used continuously, it can even stop periods. Some woman may experience spotting or irregular bleeding.
Decrease bone density: It is said that using injectable contraception may lower the density of your bone.
Mood swings, breast pain and headaches: These side effects usually occur during the first few weeks after the injection and then subside. It is advisable to consult a doctor if the side-effects persist.
What are the advantages of using injectable contraception?
It is an effective and safe birth-control method. It is suitable for those who do not mind not having their period or regular injections. It is safe during breastfeeding and you do not have to remember taking pills every day. It is also suitable for those who have some medical condition and are on medication that ups the level of liver enzymes. (ALSO READ How to prevent pregnancy after intercourse: Follow these steps to avoid pregnancy!).
Who should avoid injectable contraception?
Those who have severe liver conditions or unexplained bleeding from the vagina should not use
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