Pregnancy Risks After Unprotected Sex During Menstrual Cycle

Is it possible to get pregnant if ejaculation occurs on the 5th day after menstruation?

Hello, Doctor: (Please take a moment to help clarify my concerns, thank you) My menstrual cycles started on April 27, May 26, June 27, and July 25.
My period on July 25 (which usually lasts for 7 days) was still ongoing on the night of the 29th (which would be the 5th day of my period).
The bleeding was minimal, sometimes bright red or light pink, but the amount was low (since it was the end of my period).
My questions are:
1.
On the 29th (the 5th day of my period), I had intercourse with ejaculation.
What is the likelihood of pregnancy? Could I be pregnant? After the ejaculation, I felt some unusual sensations in my lower abdomen that I can't quite describe.

2.
By July 31, it was the 7th day of my period, so it should have been considered over.
I did not experience any bleeding on August 1 or 2 (and did not have intercourse).
On August 3, I had intercourse, but the male partner used his fingers and genitalia, which was somewhat vigorous.
Afterward, I noticed bright red blood, but after wiping, I did not have any further bleeding until the next day.
What could be the reason for this?
3.
On August 9, the male partner again used his fingers for penetration, but there was no bleeding!
4.
Normally, my breasts feel soft, but since about a week after my period ended, they have felt swollen and somewhat painful when pressed (they feel firm).
Does this indicate a possibility of pregnancy from the ejaculation on the 29th?
5.
Since that day of ejaculation, I sometimes feel nauseous.
Could this be due to overeating or my excessive water intake?
6.
Yesterday afternoon, I experienced some sharp pain in my breasts, but I'm not sure why (it was only yesterday afternoon).
7.
Could this all be psychological? Am I overthinking due to my worries about pregnancy? Or is there a significant chance of pregnancy? I initially planned to take a pregnancy test, but I'm afraid it might not show accurate results.
My next expected period is around August 25, which is still quite a while away.
I'm really worried about the possibility of being pregnant from the ejaculation on the 29th.
I'm quite anxious.

Xiao Zhu Yi Ge, 20~29 year old female. Ask Date: 2007/08/11

Dr. Li Guanghan reply Obstetrics and Gynecology

Hello!
1.
During menstruation, the cervix is at its most vulnerable and has the lowest resistance, making sexual intercourse inadvisable.
Although the chances of conception are low at this time, it is not impossible.
If you are concerned about pregnancy, you should seek consultation for emergency contraception as soon as possible after intercourse (the sooner, the better, and no later than 72 hours).

2.
If you experience bleeding after intercourse, the first step is to rule out any cervical lesions.
Please come in for an examination.

3.
It is recommended that you avoid premarital sexual intercourse as much as possible, as it is beneficial for both your physical and mental well-being.
If you must engage in sexual activity, it is best to use condoms correctly throughout the entire act to prevent sexually transmitted infections and ensure effective contraception.

Reply Date: 2007/08/11

More Info

Understanding the risks of pregnancy after unprotected sex during your menstrual cycle can be quite complex, especially given the various factors that influence ovulation and conception. Let's break down your concerns based on the information you've provided.

1. Timing of Ovulation: Typically, ovulation occurs around 14 days before your next expected period. Given your menstrual cycle lengths of approximately 30-35 days, ovulation likely occurs between days 14 and 21 of your cycle. Since you had unprotected sex on July 29, which is the fifth day of your period, the likelihood of becoming pregnant from that encounter is relatively low. Sperm can survive in the female reproductive tract for up to five days, but since you were still menstruating, it is unlikely that you were ovulating at that time.

2. Post-Intercourse Symptoms: The "strange" feeling in your lower abdomen after the encounter could be due to various reasons, including normal post-coital sensations, anxiety about potential pregnancy, or even menstrual-related discomfort. It’s important to note that many women experience changes in their bodies during their menstrual cycles, which can lead to various sensations.

3. Bleeding After Intercourse: The fresh red blood you noticed after the sexual activity on August 3 could be due to several factors, including cervical irritation, especially if there was vigorous activity. This is not uncommon and does not necessarily indicate pregnancy. If the bleeding was light and stopped quickly, it is likely not a cause for concern.

4. Breast Changes: Breast tenderness and swelling can occur due to hormonal fluctuations throughout your cycle. This can happen after your period ends and is not solely indicative of pregnancy. However, if you are concerned about pregnancy, it is essential to consider this symptom in conjunction with other signs.

5. Nausea and Other Symptoms: Feeling nauseous can be attributed to various factors, including dietary changes, stress, or hormonal changes. It’s also common for anxiety about potential pregnancy to manifest as physical symptoms, including nausea.
6. Psychological Factors: Anxiety and stress about the possibility of being pregnant can lead to heightened awareness of bodily sensations and symptoms. This psychological aspect can sometimes amplify normal bodily changes, making you more sensitive to them.

7. Pregnancy Testing: If your period is expected around August 25 and you are concerned about the possibility of pregnancy, it would be advisable to wait until after your expected period to take a home pregnancy test. Testing too early can lead to false negatives due to insufficient levels of the pregnancy hormone (hCG) in your urine.

In conclusion, while the risk of pregnancy from the encounter on July 29 is low, it is essential to monitor your body and any changes you experience. If your period is late or if you experience unusual symptoms, consider taking a pregnancy test or consulting with a healthcare provider for further evaluation. Remember, understanding your menstrual cycle and how it relates to ovulation is key in assessing pregnancy risks. If you have ongoing concerns or experience significant changes, seeking medical advice is always a prudent choice.

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