Not yet arrived??
Hello doctor: My girlfriend's last menstrual period started on December 3rd, and we had intercourse on December 24th.
What is the likelihood of her being pregnant? She still hasn't gotten her period since then.
Please help me clarify this.
Thank you! (My girlfriend's menstrual cycle is 30 days.)
hei gui, 20~29 year old female. Ask Date: 2005/01/07
Dr. Li Guanghan reply Obstetrics and Gynecology
Hello: If your girlfriend has irregular menstrual cycles, the failure rate of this contraceptive method is quite high.
Generally, the likelihood of conception is low about 20 days after menstruation.
It is recommended to take a pregnancy test.
Dr.
Cheng Jin-He, Department of Obstetrics and Gynecology, Hsinchu Hospital.
Reply Date: 2005/01/07
More Info
When considering the possibility of pregnancy, it's essential to understand the menstrual cycle and the timing of ovulation. Your girlfriend's last menstrual period (LMP) was on December 3, and you had sexual intercourse on December 24. Given that her cycle is approximately 30 days, we can estimate her ovulation window.
Typically, ovulation occurs about 14 days before the start of the next menstrual period. For a 30-day cycle, ovulation would likely occur around day 16, which would be approximately December 19. Sperm can survive in the female reproductive tract for up to five days, so if you had intercourse on December 24, it is outside the typical ovulation window. Therefore, the likelihood of pregnancy from that encounter is relatively low.
However, since your girlfriend's period has not arrived as expected, it's crucial to consider a few factors. Stress, changes in routine, illness, or hormonal fluctuations can all affect the menstrual cycle, potentially causing a delay. If her period is late, the best course of action is to take a home pregnancy test. These tests are most accurate when taken after a missed period, as they measure the hormone hCG (human chorionic gonadotropin), which is produced during pregnancy.
If the test is positive, it would confirm pregnancy, and you should encourage her to see a healthcare provider for further evaluation and guidance. If the test is negative and her period still does not arrive, it may be wise for her to consult a doctor to rule out any underlying issues.
In summary, while the timing of your sexual encounter suggests a low risk of pregnancy, the absence of her period warrants further investigation. Taking a pregnancy test will provide clarity, and if needed, a healthcare professional can offer support and advice on next steps. It's essential to communicate openly with your girlfriend about these concerns and ensure that she feels supported throughout this process.
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