Could She Be Pregnant? Menstrual Irregularities and Risks - Obstetrics and Gynecology

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Hello, doctor.
I would like to ask you about my girlfriend.
Her last menstrual period was the week of September 6.
Then, on September 13, we engaged in an act that resembled sexual intercourse, but I did not fully penetrate; I only inserted about one-third of the glans, or even less, and this lasted for a few minutes without ejaculation.
Later, on October 11, after I ejaculated during a DIY session, my genitalia accidentally touched hers, but I withdrew immediately.
However, from September 6 until now, October 23, she has not had her menstrual cycle.
Is it possible that she is pregnant, or could this be a case of menstrual irregularity? (She sometimes stays up late and occasionally skips breakfast, or she eats very little.)

Axiang, 20~29 year old female. Ask Date: 2004/10/23

Dr. Li Guanghan reply Obstetrics and Gynecology


Hello: Calculating the safe period and withdrawal method are both unreliable contraceptive methods.
To determine if you are pregnant, please visit a gynecology clinic for a test.
Thank you, Dr.
Cheng Jin-He, Department of Obstetrics and Gynecology, Hsinchu Hospital.

Reply Date: 2004/10/23

More Info


It sounds like you are concerned about the possibility of pregnancy due to some recent sexual activity with your girlfriend, as well as her missed period. Let's break down the situation based on the information provided.

Firstly, the timing of her last menstrual period (LMP) on September 6 and the sexual encounters on September 13 and October 11 are important. Since her menstrual cycle can vary, it’s essential to consider that a typical cycle lasts anywhere from 21 to 35 days. If her cycle is regular and typically around 28 days, she would expect her next period around October 4. Given that it is now October 23 and she has not had her period, this could indicate a missed period.

Regarding the sexual encounters, the first one on September 13 involved only partial penetration without ejaculation, which significantly reduces the likelihood of pregnancy. However, there is still a small risk of pregnancy from pre-ejaculate fluid, which can contain sperm. The second encounter on October 11, where you mentioned that your genitalia accidentally touched hers after ejaculation, also presents a low risk of pregnancy, especially if there was no direct ejaculation inside her.

Given that she has missed her period, it is advisable for her to take a home pregnancy test. These tests are generally accurate if taken after a missed period. If the test is positive, it would confirm pregnancy. If it is negative and she still does not get her period, it would be wise for her to consult a healthcare provider for further evaluation.

There are several factors that could contribute to her missed period, including stress, changes in weight, hormonal imbalances, or lifestyle factors such as irregular sleep patterns and inadequate nutrition. Stress, in particular, can significantly affect menstrual cycles, leading to delays or missed periods. If she has been experiencing stress from work, school, or personal life, this could be a contributing factor.

In terms of her health, it’s important for her to maintain a balanced diet and regular sleep schedule, as these can influence her menstrual cycle. If she is skipping meals or not eating enough, this could also lead to irregularities. Encouraging her to eat a nutritious diet and manage stress can help regulate her cycle.

If she continues to experience irregularities or has other symptoms such as severe pain, excessive bleeding, or unusual discharge, it would be prudent for her to seek medical advice. A healthcare provider can perform a thorough evaluation, including blood tests or ultrasounds if necessary, to determine the underlying cause of her missed period.

In summary, while there is a possibility of pregnancy given the circumstances, it is more likely that her missed period could be attributed to other factors such as stress or lifestyle changes. A home pregnancy test will provide clarity, and if needed, a consultation with a healthcare professional can help address any concerns regarding her menstrual health.

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