Am I Pregnant? Pregnancy Risks After Unprotected Intercourse

Can I get pregnant?

The last menstrual period started on December 31, 2020.
There was unprotected sexual intercourse, but no ejaculation occurred.
Seven days later, a pregnancy test showed one line, but the menstrual period still did not arrive.
On February 2, another pregnancy test using a Man Shu Lei Dun test stick was conducted, and after 15 minutes, it also showed one line.
However, after leaving it on the table for three hours, a faint second line appeared, which was very light and required close inspection to see.
That afternoon, I visited a gynecologist, and after a urine test by the nurse, it was determined that I was not pregnant, although it was mentioned that it might still be too early to detect.
An ultrasound was performed, and the doctor said nothing was visible, prescribing Provera to induce menstruation.
The next day, February 3, I bought a different brand of pregnancy test stick, which resulted in a clear single line.
My question is, am I pregnant or not? Today, February 4, is the second day of taking the medication to induce menstruation, and I am supposed to take it for three days.
Despite this, my period has not yet arrived, and I had unprotected intercourse again today, but there was no ejaculation.
What is the likelihood of becoming pregnant?

P, 10~19 year old female. Ask Date: 2020/02/05

Dr. Cao Guotao reply Obstetrics and Gynecology

Hello, it seems you are not pregnant.
It's important to use contraception at all times.
Wishing you good health.

Reply Date: 2020/02/05

More Info

Determining whether you are pregnant can be a complex process, especially when considering the timing of your menstrual cycle, the nature of your sexual activity, and the results of various pregnancy tests. Based on the information you've provided, let's break down the situation and address your concerns regarding the possibility of pregnancy and the associated risks.

Firstly, you mentioned that your last menstrual period started on December 31, and you had unprotected intercourse on January 20. While you indicated that there was no ejaculation inside, it is important to note that pre-ejaculate fluid can contain sperm, which means there is still a risk of pregnancy even without direct ejaculation. The timing of your cycle is also crucial; if you have a regular cycle, ovulation typically occurs around 14 days before your next period is due. If your cycle is longer or irregular, this could shift the timing of ovulation, potentially increasing the risk of pregnancy if intercourse occurs close to ovulation.

You conducted multiple pregnancy tests, with the first test showing a negative result and subsequent tests showing faint lines. It is essential to understand that a faint line can indicate a positive result, but it is also possible for it to be a false positive, especially if the test is read after the recommended time frame. The fact that the healthcare provider performed a urine test and indicated that you were not pregnant adds another layer of complexity. Urine tests can sometimes yield false negatives, particularly if taken too early or if the urine is diluted.

The ultrasound examination that showed no signs of pregnancy further supports the idea that you may not be pregnant. However, it is important to consider that very early pregnancies may not always be visible on an ultrasound, especially if it is performed before the expected time of your next period.

Regarding the use of medication to induce menstruation (like Provera), this can be effective in prompting your body to shed the uterine lining, which is what occurs during a menstrual period. If you are taking this medication and have not yet seen your period, it is advisable to continue monitoring your symptoms and follow up with your healthcare provider.

As for the risk of pregnancy after taking the medication, if you had unprotected intercourse again while on Provera, the likelihood of pregnancy is generally low, as the medication is designed to induce menstruation and regulate your cycle. However, it is not 100% effective in preventing pregnancy, especially if ovulation occurs before the medication takes effect.

In summary, based on the information provided, it seems less likely that you are pregnant, especially considering the negative urine test and the ultrasound results. However, if your period does not arrive after completing the course of medication, or if you have any further concerns, it is crucial to consult with your healthcare provider for further evaluation and guidance. They may recommend additional testing or monitoring to ensure your reproductive health is managed appropriately.

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