And there is a chance that St. John’s Wort could also affect the pill’s ability to work, she notes. Learn when and why you can still get pregnant on the pill. Although birth control pills have a high success rate, they can fail and you can get pregnant while on the pill. The hormones do not leave your body in that period of time, as long as you use your method as directed.

Connect your pill-taking to a daily activity if this helps you remember it. However, if you're pregnant, this hormone will not be present in your urine or blood until 13 to 16 days after the release of an egg (ovulation), which is around the time you would normally get your period. If you start taking the pill right after your period ends, you're good to go.
In this scenario, and the timing is just right, there is a possibility of having sex during menses and becoming pregnant shortly after if ovulation occurs within several days of the period ending. In fact, there are still ways you can still get pregnant when you are taking it. 6 Ways You Can Get Pregnant While You're On The Pill. Taking the correct pill in the sequence every day at the same time will boost your odds of preventing pregnancy.

If you're trying to get pregnant, it's a good idea to wait to have one natural period first. Yes, you can have sex while on the placebo pills. Birth control failure is often the result of missing two or more pills in a row. By Teresa Newsome. Yes. It is true that some women have a very short follicular phase (where the egg matures on the ovary) in their cycle. If you are actually pregnant, your pregnancy hormone levels are still high so you do not get your period. You have got me thoroughly confused, if you were still taking active pills you weren't due for a period. Birth control pills are generally very effective when a person takes them correctly and consistently. If you were on the inactive pills, then missing one is nothing to worry.

Those sugar pills are exactly what they sound like—they’re made of sugar. The pill can also fail because of illness where you are vomiting or have diarrhea, because it might not have had time to be absorbed into your system, before it’s, ahem, expelled. Despite these high percentages, it’s still possible for you to get pregnant. If you made a mistake and then you don't have a period within 45 days, you could definitely be pregnant. If you are on the birth control pill or a vaginal hormone ring that is removed during menstruation, you are still covered while on your menstrual period.