Can You Get Pregnant After Sex on Day 4 of Your Period? - Obstetrics and Gynecology

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Is it possible to become pregnant?


Having intercourse on the fourth day of your menstrual cycle, especially if it is during your period, generally has a lower chance of resulting in pregnancy.
However, it is still possible, as sperm can survive in the female reproductive tract for several days.
Urinating immediately after intercourse may help reduce the likelihood of pregnancy, but it does not guarantee that sperm will not reach the egg.
If you are concerned about the possibility of pregnancy, consider taking a pregnancy test if your next period is late, or consult with a healthcare provider for further advice.
Thank you!

MARRY, 20~29 year old female. Ask Date: 2005/03/14

Dr. Chen Nengjin reply Obstetrics and Gynecology


The likelihood of becoming pregnant from intercourse on the fourth day of menstruation is extremely low.
However, a greater concern is whether the menstrual blood has been completely expelled, as engaging in intercourse at this time may increase the risk of infection.

Reply Date: 2005/03/14

More Info


When considering the likelihood of becoming pregnant after having sex on the fourth day of your period, it's essential to understand the menstrual cycle and the timing of ovulation. Typically, a woman's menstrual cycle lasts about 28 days, but it can vary from 21 to 35 days. Ovulation usually occurs around 14 days before the start of the next period, which means that if you have a regular cycle, ovulation would likely occur around day 14 of your cycle.

Having sex on day 4 of your period generally presents a low chance of pregnancy. This is because sperm can survive in the female reproductive tract for up to five days, but the egg is only viable for about 12 to 24 hours after ovulation. Therefore, if you have a typical cycle, the chances of sperm being present when an egg is released (around day 14) are relatively low when intercourse occurs on day 4.

However, it’s important to note that menstrual cycles can vary significantly among women, and some women may have shorter cycles or irregular cycles. In such cases, ovulation may occur earlier than day 14, which could increase the chances of pregnancy if you have sex during your period. Additionally, some women may experience spotting or bleeding that could be mistaken for a period but is actually related to ovulation.

Regarding your specific situation, you mentioned that your boyfriend ejaculated inside you, and you urinated immediately afterward. While urinating may help flush out some sperm, it does not guarantee that all sperm will be expelled from the vagina. Sperm can swim against gravity and may still reach the cervix and potentially fertilize an egg if ovulation occurs soon after.

In summary, while the likelihood of becoming pregnant from intercourse on day 4 of your period is generally low, it is not impossible, especially if you have an irregular cycle or if ovulation occurs earlier than expected. If you are concerned about the possibility of pregnancy, consider taking a pregnancy test if your period is late or consult with a healthcare provider for personalized advice.

In terms of reproductive health, it’s always a good idea to discuss contraceptive options with your partner if you wish to avoid unintended pregnancies. Various methods, including hormonal birth control, condoms, and other barrier methods, can help manage your reproductive health effectively. If you have further questions or concerns about your menstrual cycle, ovulation, or pregnancy risks, don’t hesitate to reach out to a healthcare professional for guidance.

Similar Q&A

Can You Get Pregnant After Intercourse Right After Your Period?

If sexual intercourse occurred about a day after menstruation and bleeding occurred a few hours later, is it possible to be pregnant?


Dr. Huang Jianzhong reply Obstetrics and Gynecology
Having sexual intercourse about a day after menstruation and experiencing bleeding a few hours later, is it possible to be pregnant? Answer: The likelihood of pregnancy is low.

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Hello, doctor. My menstrual period started on July 31, and I had intercourse on August 4. Is it possible to get pregnant?


Dr. Huang Jianzhong reply Obstetrics and Gynecology
Menstruation started on July 31, and intercourse occurred on August 4. Is it likely to get pregnant? Answer: Unlikely.

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Can You Get Pregnant If You Have Unprotected Sex on Day 4 of Your Period?

Hello, doctor. I would like to ask if there is a chance of pregnancy if I have unprotected intercourse on the fourth day of my period when there is only a little blood left. Thank you, doctor.


Dr. Cao Guotao reply Obstetrics and Gynecology
Hello, the chances of pregnancy should be low. Wishing you good health.

[Read More] Can You Get Pregnant If You Have Unprotected Sex on Day 4 of Your Period?


Can You Get Pregnant from Intercourse on Day 4 of Your Cycle?

If my girlfriend's menstrual cycle ended on the fifth day, and we had intercourse on the fourth day with withdrawal (pulling out), is there a chance of pregnancy?


Dr. Cao Guotao reply Obstetrics and Gynecology
Hello, if you are wondering whether you are pregnant, it is best to take preventive measures at all times. You cannot rely on the safe period. If your period is late by more than a week, it is advisable to see a gynecologist. Wishing you good health.

[Read More] Can You Get Pregnant from Intercourse on Day 4 of Your Cycle?


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