Pregnancy Chances After Safe Period Intercourse - Obstetrics and Gynecology

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Probability of Pregnancy


Hello doctor, my period was from May 6 to May 10.
I had sexual intercourse with my boyfriend on May 16 (with a condom), and he did not ejaculate.
The timing was also during my safe period.
I know that using a condom significantly reduces the chance of pregnancy, but I still have some concerns.
What is the likelihood of becoming pregnant in this situation? My boyfriend says I'm overthinking it.

Chen, 20~29 year old female. Ask Date: 2020/05/31

Dr. Wu Xianghui reply Obstetrics and Gynecology


For pregnancy concerns, please perform a home pregnancy test or consult a specialist in obstetrics and gynecology for evaluation four weeks after sexual intercourse.

Reply Date: 2020/05/31

More Info


When it comes to understanding the chances of pregnancy after engaging in sexual intercourse during what is considered a "safe period," it's essential to clarify a few key points regarding the menstrual cycle, ovulation, and the effectiveness of contraceptive methods.

Firstly, the menstrual cycle typically lasts about 28 days, but it can vary significantly among individuals. The cycle begins on the first day of menstruation and ends the day before the next period starts. Ovulation usually occurs around 14 days before the next period is due. This means that if your cycle is regular, you can estimate your ovulation period and identify a "safe period" when the chances of pregnancy are lower. However, if your cycle is irregular, as many women experience, calculating the safe period becomes much more challenging and less reliable.

In your case, you mentioned that your menstrual period was from May 6 to May 10, and you had sexual intercourse on May 16. Since this date falls shortly after your period, it is generally considered to be within the safe period. Additionally, you noted that your boyfriend used a condom and did not ejaculate during intercourse. The use of condoms is one of the most effective methods of contraception when used correctly, with a failure rate of about 2% to 18% depending on typical versus perfect use. This means that while there is still a small chance of pregnancy, it is significantly reduced when using condoms properly.

It's also important to note that pre-ejaculate fluid (pre-cum) can contain sperm, which means that even if your boyfriend did not ejaculate inside you, there is still a minimal risk of pregnancy if pre-ejaculate fluid was present. However, the risk remains low, especially since you were in a period considered less fertile.

Given that you are feeling anxious about the possibility of pregnancy, it's crucial to remember that stress and anxiety can also affect your menstrual cycle and overall well-being. If your period is late or you experience any unusual symptoms, it would be wise to take a home pregnancy test or consult with a healthcare provider for further evaluation.

In summary, while there is always a slight risk of pregnancy with any sexual activity, especially if it occurs close to ovulation, your situation appears to have a low risk of pregnancy due to the timing of your cycle and the use of condoms. If you continue to have concerns about pregnancy or contraception, consider discussing with a healthcare professional who can provide personalized advice and support.

Lastly, if you are looking for more reliable contraceptive methods in the future, you might want to explore options such as hormonal birth control pills, intrauterine devices (IUDs), or other long-acting reversible contraceptives (LARCs). These methods can provide more consistent protection against unintended pregnancy and may help alleviate some of the anxiety associated with relying solely on timing and barrier methods.

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