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It also depends on whether the method is convenient and whether the person remembers to use it correctly all of the time. These include whether a person has any health conditions or is taking any medicines that might affect its use. In general, how well each type of birth control method works depends on a lot of things.
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The chance of getting pregnant increases if a girl waits longer than 3 months to get her next shot. Over the course of a year, about 6 out of 100 typical couples who use the birth control shot will have an accidental pregnancy. The birth control shot is an effective birth control method. How Well Does the Birth Control Shot Work? The progestin also thins the lining of the uterus so that an egg will have a hard time attaching to the wall of the uterus. This makes it hard for sperm to enter the uterus and reach any eggs that may have been released. The progestin also thickens the mucus around the cervix. If a girl doesn't ovulate, she cannot get pregnant because there is no egg to be fertilized. The hormone progestin in the birth control shot works by preventing ovulation (the release of an egg during the monthly cycle). The birth control shot contains a long acting form of the hormone progestin. The birth control shot is an injection given to a girl every 3 months to help prevent pregnancy.
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