When birth control fails, it is possible to become pregnant. Not all birth control methods are equally effective, meaning that some have higher failure rates than others. In this article, learn about the effectiveness of each type of birth control, as well as what to do if you suspect that you are pregnant. Different types of birth control have varying levels of effectiveness and fail for different reasons. Birth control options include:. Hormonal methods of birth control work by releasing either a synthetic form of progesterone called progestin or a mixture of progestin and synthetic estrogen.
Hormonal birth control prevents pregnancy by:. According to the Centers for Disease Control and Prevention CDC , the birth control injection tends to be the most effective form of hormonal birth control. Birth control pills, patches, and rings are about 91 percent effective with typical use. An intrauterine device IUD is a T-shaped device that a doctor inserts into the base of the uterus. Both types of IUD also block sperm from entering the uterus.
Hormonal IUDs can take up to a week to begin releasing hormones, so they are more likely to fail during the first week after placement. Additionally, both hormonal and copper IUDs can become displaced and fall out of the cervix, making pregnancy possible on rare occasions. Barrier methods of birth control work by physically blocking sperm from reaching the egg. These methods include:. The effectiveness of barrier methods vary. According to the CDC , barrier methods are 12—28 percent effective at preventing pregnancy.
Diaphragms and male condoms are the most effective of these methods, while spermicide is the least likely to prevent pregnancy. Barrier methods usually fail due to user error. In some cases, a person may not use a barrier method early enough, allowing sperm to enter the vagina.
Urine tests require a certain level of HCG to be present in order to indicate a positive pregnancy result. Blood tests are more sensitive because they can detect a smaller amount of HCG, which means that pregnancies can be picked up earlier, usually between 6 to 8 days after ovulation. You can have a blood test at your GP surgery, but it's recommended you take a home urine test before booking an appointment. HCG is sometimes used in fertility treatment, which could cause a false-positive result where the result shows as positive but is actually negative.
You should wait 14 days after having fertility treatment before taking a pregnancy test. If you get a negative result after taking your pregnancy test, it can mean several different things.
Firstly, it can mean you are not pregnant, or that you have taken the test too early. Taking a test early is easily done because it can be difficult to work out the exact day you began ovulating. If you think you may have taken the test too early, wait a few days before taking a second test, or see your GP for advice and possibly a blood test.
Negative results may also be because you have timed the test incorrectly. For instance, if you collect a sample of your urine for testing and have not conducted the test within 15 minutes, it may affect the result. Home pregnancy tests can vary, so always read the instructions carefully before you do the test.
Can implants be left in a woman's arm? Leaving the implants in place beyond their effective lifespan is generally not recommended if the woman continues to be at risk of pregnancy. The implants themselves are not dangerous, but as the hormone levels in the implants drop, they become less and less effective. After they lose effectiveness, they may still release a small dose of hormone for several more years, which serves no purpose.
If a woman wants to continue using implants, she may have a new implant inserted in the other arm even if the first implant is not removed at that time, for example, if removal services are not immediately available. Do implants cause cancer? How long does it take to become pregnant after the implants are removed? Women who stop using implants can become pregnant as quickly as women who stop nonhormonal methods. Implants do not delay the return of a woman's fertility after they are removed.
The bleeding pattern a woman had before she used implants generally returns after they are removed. Do implants cause birth defects? Will the fetus be harmed if a woman accidentally becomes pregnant with implants in place? Good evidence shows that implants will not cause birth defects and will not otherwise harm the fetus if a woman becomes pregnant while using implants or accidentally has implants inserted when she is already pregnant. Rarely, a rod may start to come out, most often in the first 4 weeks after insertion.
This usually happens because they were not inserted well or because of an infection where they were inserted. In these cases, the woman will see the implants coming out. Birth Control Implant.
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