Pregnancy or Delayed Menstruation: Your Concerns

Pregnancy or delayed menstruation?

Hello, doctor.
My last menstrual period was from October 28 to November 1.
I had sexual intercourse with my boyfriend on November 6 and 7 (we used condoms, and he ejaculated each time).
On the morning of November 8, I went to the emergency room due to a urinary tract infection and took antibiotics for a week and a half.
On November 23, I caught a cold and took cold medication for a week.
I expect my period to arrive on December 2, but I'm worried that it might be delayed due to the medication or that I might be pregnant.

Chen, 10~19 year old female. Ask Date: 2020/11/30

Dr. Cao Guotao reply Obstetrics and Gynecology

Hello, the chances of pregnancy should be low.
If your period does not arrive in another week, it is advisable to see a gynecologist.
Wishing you good health.

Reply Date: 2020/11/30

More Info

It's understandable to feel anxious about the possibility of pregnancy, especially when you've had unprotected sexual intercourse and are experiencing a delay in your menstrual cycle. Given your timeline, it's important to consider several factors that could be influencing your situation.

Firstly, the medications you've taken—antibiotics for a urinary tract infection and cold medication—can sometimes affect your menstrual cycle. While antibiotics are generally not known to interfere with menstrual cycles, certain medications, especially those that affect hormonal balance, can lead to changes in your cycle. Cold medications can also have side effects that may impact your overall health, including your menstrual regularity.
In your case, since you had unprotected sexual intercourse, it's wise to take a pregnancy test if your period does not arrive as expected. Home pregnancy tests are quite accurate when taken after a missed period, so if you find that your period is late, consider testing around December 3rd or later for the most reliable result.
If you do find yourself pregnant, it’s essential to consult with a healthcare provider. They can provide guidance on the next steps, including prenatal care and any necessary lifestyle adjustments. If you are not pregnant and your period remains delayed, it would still be beneficial to see a healthcare provider to discuss your menstrual irregularities, especially considering the recent medications and any underlying health issues.

Additionally, stress and anxiety can also play significant roles in menstrual irregularities. If you are feeling particularly anxious about the possibility of pregnancy or the effects of medication, it might be helpful to engage in stress-reducing activities such as yoga, meditation, or talking to a mental health professional.
In summary, while it’s possible that the medications you took could have some effect on your menstrual cycle, the best course of action is to wait for your period and take a pregnancy test if it doesn’t arrive. Regardless of the outcome, consulting with a healthcare provider will help you understand your body better and address any concerns you may have. Remember, it's important to prioritize your mental and physical health during this time.

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