Could I Be Pregnant? Symptoms and Test Results

Can I get pregnant?

Hello doctor, my last normal menstrual period was on November 26.
However, I took emergency contraception on December 3, which caused my cycle to become irregular.
I had another period on December 9.
I had unprotected intercourse with my boyfriend on December 18 and 25, both times with ejaculation outside.
On the night of the 25th, I felt very unwell, experiencing dizziness and nausea, and I even vomited some stomach acid.
My boyfriend is worried that there might have been ejaculation inside during the encounter on the 18th, which could lead to pregnancy, so he bought a pregnancy test for me.
The result showed one line.
Could I still be pregnant? Are the symptoms of dizziness and nausea due to pregnancy or premenstrual syndrome?

Xin, 20~29 year old female. Ask Date: 2016/12/26

Dr. Cao Guotao reply Obstetrics and Gynecology

Hello, the chances of pregnancy are low, but it is best to take preventive measures at all times and not to rely on the safe period.
If your period is more than a week late, it is advisable to see a gynecologist.
Wishing you good health.

Reply Date: 2016/12/26

More Info

Based on the information you've provided, it seems you are experiencing a range of symptoms and have concerns about the possibility of pregnancy. Let's break down your situation and clarify some important points regarding pregnancy testing and the symptoms you are experiencing.

1. Understanding Pregnancy Tests: Home pregnancy tests (HPTs) work by detecting the hormone human chorionic gonadotropin (hCG) in your urine. This hormone is produced shortly after a fertilized egg attaches to the uterine lining. If you received a negative result (one line) on your pregnancy test, it typically indicates that you are not pregnant, especially if the test was taken after a missed period or at least a week after potential conception. However, if the test is taken too early, it may not detect hCG levels yet, leading to a false negative. Given that your last normal period was on November 26 and you had unprotected intercourse on December 18 and 25, it is advisable to wait a few days after your expected period to retest for more accurate results.

2. Symptoms of Pregnancy vs. PMS: The symptoms you are experiencing, such as dizziness and nausea, can be associated with both early pregnancy and premenstrual syndrome (PMS). Early pregnancy symptoms can include nausea (often referred to as morning sickness), fatigue, and breast tenderness, while PMS can cause similar symptoms, including mood swings, bloating, and discomfort. The timing of your symptoms in relation to your menstrual cycle is crucial. If your period is late, it could indicate pregnancy; however, if you are close to your expected period, these symptoms could be attributed to PMS.

3. Impact of Emergency Contraception: You mentioned taking emergency contraception (the "morning-after pill") on December 3. This medication can cause changes in your menstrual cycle, including irregular bleeding or changes in the timing of your next period. It is not uncommon for your cycle to be disrupted after taking emergency contraception, which could explain the irregularities you are experiencing.

4. Next Steps: If your period does not arrive as expected, consider retesting with a home pregnancy test about a week after your missed period for the most reliable result. If you continue to experience symptoms like dizziness and nausea, or if you have any concerns about your health, it is advisable to consult with a healthcare provider. They can perform a blood test for pregnancy, which is more sensitive than a urine test and can provide definitive results.

5. When to Seek Medical Attention: If you experience severe symptoms such as intense abdominal pain, heavy bleeding, or any other concerning signs, it is essential to seek medical attention promptly. These symptoms could indicate other medical conditions that require evaluation.

In summary, while your initial pregnancy test result indicates that you are likely not pregnant, it is important to consider the timing of the test and your symptoms. Monitoring your menstrual cycle and consulting with a healthcare provider will help clarify your situation and ensure your health is prioritized.

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