It's possible to get pregnant when you're using birth control, whether you're on your period or not. The only percent-effective type of birth control is abstinence. The likelihood that a contraceptive will fail varies depending on the method of birth control based on typical use :. For what it's worth, tracking your monthly cycle — called "fertility awareness" — in order to avoid pregnancy isn't the most reliable birth control method; the typical failure rate may be as high as 23 percent. The bottom line: Although the odds are slim, you can get pregnant on your period — or any other time of the month.
It's even possible though not as likely to get pregnant on your period if you're using birth control. What to Expect follows strict reporting guidelines and uses only credible sources, such as peer-reviewed studies, academic research institutions and highly respected health organizations. Learn how we keep our content accurate and up-to-date by reading our medical review and editorial policy.
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Back to Top. In This Article. Continue Reading Below. Read This Next. This might happen when: A girl has bleeding that she thinks is a period, but it's bleeding from ovulation.
Ovulation is the monthly release of an egg from a girls ovaries. It is the time when she is most likely to get pregnant if she has sex. Ovulation happens before the bleeding from a girl's period has stopped. Ovulation happens within a few days after a girl's period is over. Sperm can fertilize an egg for 3 days. Over several months, you can identify a pattern to determine roughly when your ovulation cycle occurs. The likelihood that a woman will get pregnant one to two days after she starts bleeding is nearly zero.
At roughly day 13 after starting her period, her chance of pregnancy is an estimated 9 percent. This includes using some form of contraception like wearing a condom or taking birth control pills.
Birth control pills will not provide a barrier against sexually transmitted diseases like herpes , gonorrhea , or chlamydia. To protect yourself from unwanted infections, have your partner wear a condom. Shop for condoms. While pregnancy is less likely in the earlier days of your period, the chances increase in the later days. They can recommend methods of tracking your ovulation, as well as fertility experts. Your doctor can also provide testing and treatments that will help you increase your chances of conception.
Worried about a late period, but know you aren't pregnant? Missed or late periods can happen for plenty of other reasons.
Read on to learn about them. Here are eight myths about periods we need to stop spreading. In case you were wondering: Yes, you can get pregnant while using birth control. Spotting is lighter than a period and may indicate that you have an underlying condition. Call your doctor if you experience abnormal vaginal bleeding. Learn when a light period is nothing to worry about, and when it may be the sign of something more serious.
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