Irregular Periods and Emergency Contraception: Your Questions Answered

Menstrual issues~"~

Hello, Dr.
Chang.
I had two menstrual periods last month; the first was from April 19 to April 25, and the second from April 28 to May 3.
I had sexual intercourse on May 15, and although I used a condom, I was concerned it might not have been effective.
Therefore, on May 16, I went to a pharmacy and took emergency contraception.
On the same day, I visited a gynecologist to inquire about having two menstrual periods last month and learned that I had missed taking my birth control pills for two days, which led to this situation (I did not resume taking the regular birth control pills after the second period ended).
The doctor prescribed Estromon F.C.
and PRIMOLUT-NOR, stating that my period would arrive around the 20th.
However, since I took the emergency contraception that day, I forgot to ask the doctor if there would be any conflict, so I did not take the prescribed medication.
Now, it has been several days since I took the emergency contraception, and my period still has not arrived.
Is this normal? Should I wait until my regular cycle is over and then take a pregnancy test if my period still hasn’t come? Additionally, I would like to ask about the effects of the two medications prescribed by the gynecologist.
If I do not take the prescribed medication, will my regular cycle still likely arrive around the 20th? Thank you!

Chole, 20~29 year old female. Ask Date: 2011/05/26

Dr. Zhang Kunmin reply Obstetrics and Gynecology

Hello, based on your description, it is common for menstruation to occur 3-5 days after finishing the menstrual regulation medication.
I recommend that if your period has not started by day 30, you should visit a gynecologist for an examination.
If you have not taken any menstrual regulation medication, the timing of your period is usually irregular.
Wishing you peace and health! Dr.
Zhang

Reply Date: 2011/05/26

More Info

When it comes to understanding irregular menstrual cycles and the implications of emergency contraception, several factors must be considered. Your situation involves a recent history of irregular periods, the use of emergency contraception, and the potential effects of hormonal medications prescribed by your doctor. Let's break down your concerns and provide clarity based on medical knowledge.

Firstly, it’s important to recognize that menstrual irregularities can stem from various causes, including hormonal imbalances, stress, changes in lifestyle, or the use of contraceptives. In your case, you mentioned that you experienced two menstrual periods in April, which can be attributed to the missed doses of your regular birth control pills. Missing doses can lead to fluctuations in hormone levels, resulting in unexpected bleeding or changes in your cycle.

Regarding the emergency contraception (EC) you took on May 16, it is designed to prevent pregnancy after unprotected intercourse. EC can alter your menstrual cycle temporarily, causing your next period to be delayed or even causing spotting. It’s not uncommon for women who take EC to experience a change in their cycle, including a delayed period. Since you took the emergency contraception shortly after your sexual encounter, it may take some time for your body to adjust and for your menstrual cycle to normalize.

You also mentioned that your doctor prescribed Estromon F.C. and PRIMOLUT-NOR. Estromon F.C. is typically used to manage hormonal imbalances, while PRIMOLUT-NOR is a progestin that can help regulate menstrual cycles. However, since you took emergency contraception, it’s wise to consult your healthcare provider before starting any new medications, as the effects of EC can overlap with those of hormonal treatments. If you have not taken the prescribed medications, it is possible that your cycle may still return to its normal pattern without them, but this can vary from person to person.

As for your concern about whether to wait for your period or to take a pregnancy test, it is generally recommended to wait until at least a week after your expected period date to take a home pregnancy test for the most accurate results. If your period does not arrive within a week of when you expect it, taking a pregnancy test would be a prudent step. If the test is negative and your period still does not come, it may be beneficial to consult your healthcare provider for further evaluation.

In summary, irregular periods can be influenced by various factors, including hormonal contraceptives and emergency contraception. The medications prescribed by your doctor may help regulate your cycle, but it’s essential to communicate with your healthcare provider about any concerns or changes in your menstrual pattern. If your period does not arrive as expected, a pregnancy test can provide clarity, and if necessary, further medical evaluation can be pursued to address any underlying issues. Always prioritize open communication with your healthcare provider to ensure you receive the best care tailored to your individual needs.

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