Withdrawal Bleeding and Safe Period in Contraception - Obstetrics and Gynecology

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Questions related to withdrawal bleeding and the safe period?


Hello Doctor: I am the person who asked question #160440.
Thank you very much for answering my previous question; I really appreciate it! I would like to continue from my last inquiry.
From September 3 to September 5, my girlfriend experienced withdrawal bleeding due to taking the emergency contraceptive pill, but the amount of bleeding was less than her usual menstruation.
I have a few questions:
1.
Are the first 7 days and the last 7 days after withdrawal bleeding considered a safe period? (I understand that calculating based on the safe period can be risky, but I am quite anxious, so I would like to ask the doctor.)
2.
If my fingers possibly had pre-ejaculate fluid and were inserted into the vagina on September 1 and September 8, is there a chance of pregnancy? (There was withdrawal bleeding from September 3 to September 5, and the amount was less than usual menstruation.)
3.
Is it normal for withdrawal bleeding after taking emergency contraceptive pills to last only three days and be lighter than a regular period? Does this indicate that the contraception was successful?
I apologize for bothering you with questions two days in a row, and I appreciate Dr.
Tsao taking the time to clarify these issues for me.
Thank you!

KK, 20~29 year old female. Ask Date: 2020/09/09

Dr. Cao Guotao reply Obstetrics and Gynecology


Hello, taking emergency contraceptive pills can cause irregular menstruation, making it difficult to estimate the safe period.
Therefore, it is still advisable to use contraceptive measures for better safety.
Wishing you good health.

Reply Date: 2020/09/09

More Info


Understanding withdrawal bleeding and the concept of safe periods in contraception is crucial for anyone who is sexually active and looking to manage their reproductive health. Let's break down your questions and concerns regarding withdrawal bleeding, safe periods, and the risks of pregnancy associated with certain sexual activities.

1. Withdrawal Bleeding and Safe Periods: Withdrawal bleeding typically occurs after taking emergency contraception (like the morning-after pill) and is a response to the hormonal changes induced by the medication. This bleeding is not the same as a regular menstrual period and can vary in volume and duration. The first seven days after withdrawal bleeding can be considered a time of uncertainty regarding ovulation. While some may refer to this as a "safe period," it is essential to understand that the timing of ovulation can be unpredictable, especially after hormonal interventions. Therefore, relying solely on calendar methods for contraception during this time can be risky.

2. Risk of Pregnancy from Pre-ejaculate: Regarding your concern about the potential for pregnancy from fingers that may have come into contact with pre-ejaculate fluid, it is important to note that while pre-ejaculate can contain sperm, the likelihood of pregnancy from this method is significantly lower than from direct ejaculation. If the fingers were inserted into the vagina after contact with pre-ejaculate, there is a small risk of pregnancy, but it is generally considered low, especially if emergency contraception was taken shortly after unprotected intercourse.

3. Characteristics of Withdrawal Bleeding: It is entirely normal for withdrawal bleeding to be lighter and shorter than a typical menstrual period. The hormonal changes from the emergency contraceptive can lead to variations in menstrual cycle patterns, including the amount and duration of bleeding. If the withdrawal bleeding lasted three days and was lighter than usual, this can still be considered a normal response to the medication. It does not necessarily indicate the failure of the contraceptive method, as the primary purpose of emergency contraception is to prevent ovulation and, consequently, pregnancy.

In summary, while withdrawal bleeding can provide some indication of hormonal changes, it is not a foolproof method for determining safe periods. The risk of pregnancy from activities involving pre-ejaculate is low but not zero, especially if there was any direct contact with the vaginal canal. If you are concerned about the possibility of pregnancy or if your menstrual cycle does not return to normal in the following months, it may be beneficial to consult with a healthcare provider for further evaluation and guidance.

In the future, if you are looking for reliable contraception, consider discussing long-term methods with your healthcare provider, such as hormonal birth control pills, IUDs, or other contraceptive options that can provide more consistent protection against unintended pregnancy. Always remember that using condoms not only helps prevent pregnancy but also protects against sexually transmitted infections (STIs).

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