Pregnancy probability
Hello Doctor: My last menstrual period was from May 22 to May 27, with an average cycle of 26 days over the past three months, compared to my usual 28 days.
On June 2, I underwent medication treatment for a urinary tract infection.
I had sexual intercourse with my boyfriend on June 12-14 and June 20.
On June 13, there was one instance of unprotected intercourse, but he did not ejaculate inside.
On June 20-21, while my boyfriend was kissing me, I felt mild cramping similar to menstrual cramps twice.
On June 21, I noticed a drop of red blood.
On June 22, I had a transvaginal ultrasound, which did not show an embryo but did reveal uterine fibroids.
On the morning of June 22, I took a pregnancy test at the clinic, which showed negative, but my period has not arrived since then.
Doctor, could I be pregnant? What is the likelihood? Thank you.
Ms. Chen, 20~29 year old female. Ask Date: 2020/06/22
Dr. Zhang Kunmin reply Obstetrics and Gynecology
Hello, the questioner: There is a possibility of pregnancy even if ejaculation has not occurred during intercourse, as pre-ejaculatory fluid may contain sperm.
Additionally, early pregnancy does not always present specific symptoms, and subjective symptoms cannot be used to determine pregnancy.
It is recommended to take a pregnancy test if your period is more than a week late.
Thank you! Wishing you peace and health.
Dr.
Chang
Reply Date: 2020/06/22
More Info
Understanding the chances of pregnancy after unprotected intercourse is a common concern for many individuals. Based on the details you've provided, let's break down the situation and assess the likelihood of pregnancy.
Firstly, your menstrual cycle averages around 26 days, with your last period occurring from May 22 to May 27. This suggests that your ovulation likely occurred around June 5 to June 10, given that ovulation typically happens about 14 days before the start of your next period. The unprotected intercourse you had on June 12-14 and June 20 could potentially coincide with your fertile window, especially if you ovulated later than the average.
The key factor to consider is the timing of intercourse in relation to ovulation. Sperm can live inside the female reproductive tract for up to five days, so if you ovulated shortly after June 12, there is a possibility that sperm from that encounter could fertilize an egg. However, the encounter on June 20, which was unprotected but without ejaculation inside, further complicates the assessment. While the risk of pregnancy is lower without ejaculation, it is not zero, as pre-ejaculate fluid can contain sperm.
On June 21, you experienced a drop of red blood, which could be indicative of several things. It might be implantation bleeding if you were indeed pregnant, or it could be related to other factors such as hormonal fluctuations or the presence of uterine fibroids, as noted in your ultrasound. The ultrasound on June 22 did not show an embryo, which is not unusual at this early stage if conception occurred shortly before the test. Additionally, the urine pregnancy test showing negative results further complicates the situation, as it may be too early to detect the hormone hCG (human chorionic gonadotropin), which is produced after implantation.
Given that your period has not arrived yet, it is advisable to wait a few more days and retest with a home pregnancy test. If you still do not get your period and the test remains negative, it may be worth consulting with a healthcare provider for further evaluation. They might suggest a blood test for pregnancy, which is more sensitive than urine tests and can provide a clearer answer.
In summary, while there is a possibility of pregnancy based on the timing of your intercourse and your ovulation cycle, the negative pregnancy tests and the ultrasound findings suggest that it is not highly likely at this moment. However, the absence of your period warrants further investigation. It is essential to monitor your symptoms and consult with a healthcare professional if you have any concerns or if your situation changes.
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