Anzilotti, MD. Larger text size Large text size Regular text size. Can a girl get pregnant if she has sex during her period? 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. In this article, we look at the chances of becoming pregnant during the period and at other times of the menstrual cycle. A person can get pregnant during their period, but it is unlikely. A person is most likely to become pregnant in the middle of their menstrual cycle, which is when the ovary releases an egg in a process called ovulation.
The menstrual cycle is the time between the first day of one period and the first day of the next period. The egg can only survive for 12—24 hours after ovulation. For this reason, it must meet a sperm cell in this time for pregnancy to occur. A person is most likely to get pregnant if they have sexual intercourse in the 3 days before and up to the day of ovulation. Since a person with day cycles typically does not ovulate until around a week after they stop bleeding, they cannot usually get pregnant during their period.
People with shorter menstrual cycles may ovulate closer to their period than people with longer cycles. The wide variation in menstrual cycle length and the timing of ovulation makes it difficult to tell when a person is in their fertile period.
Some researchers suggest that having sexual intercourse on the day before ovulation will carry the same chances of getting pregnant as having sexual intercourse multiple random times throughout the menstrual cycle. The average female will bleed for around 5 days, although it is very common to bleed for shorter or longer periods of time. Doctors generally agree that people are not likely to get pregnant in the days leading up to their period.
This is especially true if their periods are regular and they have a day menstrual cycle. However, given the fluid nature of the fertile window, people who do not want to become pregnant should still use contraception at this time. Sperm cells can only fertilize an egg within a hour window after ovulation.
If a person knows when they have ovulated and counts w days from ovulation, they should no longer be able to get pregnant before their next period. It is, however, possible for a person to get pregnant immediately after their period.
This is because sperm can still fertilize eggs for 3—5 days after sexual intercourse. By as early as the third day of your menstrual cycle, your levels of the reproductive hormones progesterone and estrogen, which taper off at the start of your period, begin to climb and help your uterine lining rebuild.
Although an egg isn't released during in the immediate post-period phase, called pre-ovulation, your chances of conceiving then are good. That's because sperm can live up to five days in hospitable cervical mucus. Bayer, M. Not every woman follows a to day cycle. In addition, some women experience breakthrough spotting or bleeding between periods. This can occur during ovulation and be mistaken for a period, making it difficult to establish the exact place in the menstrual cycle.
If you had unprotected sex during your period and are concerned that you may be pregnant, look out for symptoms like mild lower abdominal cramping, spotting implantation spotting , a fairly common cause of bleeding once the egg has been fertilized , breast tenderness and moodiness.
These symptoms can occur as early as two weeks after ovulation. Other, more common, pregnancy symptoms to watch out for will manifest closer to six or seven weeks' gestation, and include nausea, vomiting and severe fatigue. Save Pin FB More. When are you most likely to conceive? Find out now. By Jennifer Barton and Holly Eagleson.
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