Most likely to get pregnant after period

Understanding your menstrual cycle is crucial to defining when you ovulate and calculating when you are most likely to get pregnant. 

“Women should be aware that if they have an irregular period, it can make the ovulation days difficult to determine.” Said Dr. Martinelli. “When examining fertility, it’s important to realize that an egg can survive for about 24 hours after ovulation, and sperm can live inside a woman’s body for three days—though sometimes it’s possible for them to survive for five days. “

How long should a normal menstrual cycle last?

An average menstrual cycle lasts 28 days, defined from the first day of menstrual bleeding to the first day of bleeding of the next period. However, irregular periods are very common.  An irregular period is defined as a cycle that varies by more than seven to nine days. 

There are several reasons why women may have abnormal periods, which can include fibroids, ovarian cysts, polyps, and even something as common as stress. 

“If you’ve constantly had an irregular period, please contact us for an appointment to determine the underlying cause and initiate treatment,” said Dr. Martinelli. 

When does ovulation start?

If you have a normal 28-day cycle, ovulation should occur about 14 days before you start your next period.

When can I become pregnant after my period?

If you have intercourse five days before ovulation until one day after ovulation, you can become pregnant. You’re much more likely to become pregnant if there are live sperm in the fallopian tubes during ovulation.

Fertility Awareness and Family Planning

Some women use fertility awareness as a method of natural birth control. One of the tools used is something called the Standard Days method. This establishes that if you have a period that is between 26 to 32 days long, days eight through 19 will be your most fertile days. However, this method is most effective when you have regular menstrual cycles. 

If a woman has a regular period and uses the method perfectly, less than one to five women out of 100 will become pregnant. However, the key words here are “perfect use.”  The typical use rate is different. Typical use means that the methods may be done incorrectly or measured inconsistently. In the first year of this typical use, 12 to 24 women out of 100 will become pregnant. (American College of Obstetricians and Gynecologists)

Infertility Treatments

For those who are struggling with the challenge of infertility, understanding your ovulation cycle can help; however, it’s important to speak with us about some of the innovative infertility treatmentsoffered at our Chapel Hill office or Durham office. We have helped hundreds of couples conceive by utilizing the latest state-of-the-art treatments and caring for both their physical and emotional needs.

We Offer Extensive Options for Both Infertility Treatment and Birth Control

We see patients at every stage of their lives. While some are trying to get pregnant, others may be looking for the most effective form of permanent birth control. Still, others may be entering menopause while some may be having their first gynecological exam. 

At any stage of your life, we offer compassionate care that has made us a leader in the area for more than 40 years. We have locations in Chapel Hill and offer Durham gynecology and  Durham obstetrics services. No matter what stage in your journey, we want to care for you throughout your life. See why our patients love our personalized approach to medicine. Schedule an appointment today.

For more than 40 years, Chapel Hill OBGYN has served women in the Triangle area, sharing the joy of little miracles and supporting them during challenges. Our board-certified physicians and certified nurse midwives bring together the personal experience and convenience of a private practice with the state-of-the-art resources found at larger organizations. To schedule an appointment, please contact us for more information.


Can You Get Pregnant if You Have Sex During Your Period?

Most likely you will not get pregnant having sex while on your period. That’s because your ovulation time is several days away decreasing any chances of getting pregnant during this time. However, there are exceptions. This applies to women who have a typical 28 to 30 day or longer cycle. If you have a shorter cycle, say every 21 to 24 days, that means you are ovulating earlier in the cycle. Because sperm can live inside you for up to 5 days, you could have sex towards the end of your period and then conceive 4 or 5 days later with your early ovulation.

The probabilities of getting pregnant during your period are low, but the possibilities are there. This is not the time to have sex if you are trying to get pregnant.

Can You Get Pregnant Right After Your Period?

You are moving into your fertility window, so yes, you can get pregnant right after your period. On a typical cycle that occurs every 28 to 30 days, the fertility window is usually between Day 11 and Day 21.  Remember, sperm can live up to 5 days. If your period (bleeding time) lasts for 5 to 7 days, and you have sex right after that, you are approaching your fertility window.

Can You Get Pregnant on the Last Day of Your Period?

If you stop bleeding on Day 6, have sex on Day 7 and ovulate on Day 11, it’s possible the sperm from Day 6 will be waiting in your fallopian tubes for conception. Your chances of conceiving right after your period increase each day after your bleeding has stopped. If you are trying to conceive this is a good time to have sex. Increase your chances of conception by having sex every other day for the next 14 days.

What About Right Before Your Period?

The likelihood of getting pregnant right before your period is extremely low. For women with a typical 28- to 30-day cycle or longer and their cycles are regular, it is fairly safe to say your ovulation occurred between Day 11 and Day 21. The egg is only available for 12 to 24 hours for conception.

This means the days right before your period are the safest to have sex without the expectation of getting pregnant. The number of “safe days” right before your period go up with longer cycles and lessen with shorter cycles.

If you wait 36 to 48 hours after ovulation, you should be beyond the possibilities of conception. The further you are from ovulation, the less likely your chance for conceiving. This is not the time to have sex if you are trying to conceive.  It’s still a good time to enjoy intimacy with your partner.

Bottom Line

A woman’s ovulation cycles can vary, so it’s statistically possible you could become pregnant while on your period. While pregnancy is less likely in the earlier days of your period, the chances increase in the later days.

If you’re trying to become pregnant and haven’t conceived after a year or more of having unprotected sex, download our new e-book The Ultimate Fertility Resource Guide. It’s a free download and has the essential information and tips you need to improve your fertility and get pregnant faster.

Want to Know More?

  • Track your ovulation cycle with our free Ovulation Calendar
  • Tracking Ovulation with Irregular Periods

Can I get pregnant 3 days after my period?

Yes! Having unprotected sex at any time is risky and can result in pregnancy. Sometimes ovulation — the time when a girl is most likely to become pregnant — can happen within a few days of when your period ends. Also, sperm can fertilize an egg for 72 hours (3 days) after ejaculation.

When are you least likely to get pregnant?

The days before and during menstruation are the least fertile days of the menstrual cycle. People with a menstrual cycle that is shorter than 28 days could ovulate within days of their period ending.