Irregular Periods: What to Do When You Experience Two Menstrual Cycles in One Month - Obstetrics and Gynecology

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Menstruation occurring twice in a month?


Hello, Doctor.
I have been experiencing menstruation for over 20 days, spanning May and June.
After visiting the doctor, I found out that my uterine lining is very thick, and I was prescribed medication to stop the bleeding.
Four days later, I got my period again, which means I had two menstrual cycles in June.
However, the second period aligns with my previous menstrual cycle and matches the predicted date in my menstrual tracking app.
I have a history of anemia and symptoms of dizziness and headaches.
This time, I am unsure if I have lost too much blood, as I feel particularly dizzy during this menstruation.
What could be the cause of this? Should I consider seeing a doctor again? Are there any self-care methods you would recommend? Thank you for your response, Doctor.

Niming, 20~29 year old female. Ask Date: 2018/06/20

Dr. Huang Jianzhong reply Obstetrics and Gynecology


I had my period for over 20 days, spanning May and June.
I went to see a doctor and found that my uterine lining was very thick.
After taking medication, the bleeding stopped.
Four days later, I got my period again, which means I had two periods in June.
However, the second period aligned with my previous menstrual cycle and matched the predicted timing in my menstrual tracking app.
I already have symptoms of anemia, dizziness, and headaches, and this time I felt particularly faint, possibly due to excessive blood loss.
Doctor, what could be the cause of this? Should I consider seeing a doctor again? Are there any self-care methods I can follow? Answer: It is advisable to see a doctor again.

Reply Date: 2018/06/20

More Info


Experiencing irregular menstrual cycles, such as having two periods in one month, can be concerning and may indicate underlying health issues. In your case, it seems that you have already consulted a doctor and received some treatment for heavy bleeding, which is a positive step. However, let's delve deeper into what might be happening and what you can do to manage your symptoms.

Firstly, having two menstrual cycles in one month can be attributed to several factors, including hormonal imbalances, stress, changes in weight, or underlying medical conditions such as polycystic ovary syndrome (PCOS) or thyroid disorders. The thickening of the uterine lining (endometrium) that you mentioned could be a result of prolonged estrogen exposure without adequate progesterone, which can lead to heavy bleeding and irregular cycles.

Given your symptoms of anemia, dizziness, and headaches, it’s crucial to address these issues promptly. Anemia can result from heavy menstrual bleeding, leading to a decrease in red blood cells and hemoglobin, which can cause fatigue, weakness, and dizziness. It’s essential to monitor your iron levels and consider dietary adjustments or supplements as advised by your healthcare provider.

Here are some recommendations for self-care and management:
1. Monitor Your Symptoms: Keep a detailed record of your menstrual cycles, including the duration, flow, and any accompanying symptoms such as pain, dizziness, or fatigue. This information can be valuable for your healthcare provider in diagnosing and managing your condition.

2. Dietary Adjustments: Focus on a balanced diet rich in iron and vitamins. Foods such as leafy greens, red meat, beans, lentils, and fortified cereals can help improve your iron levels. Additionally, vitamin C can enhance iron absorption, so consider incorporating citrus fruits, strawberries, or bell peppers into your meals.

3. Stay Hydrated: Ensure you are drinking enough fluids, especially if you are experiencing heavy bleeding. Dehydration can exacerbate feelings of dizziness and fatigue.

4. Rest and Manage Stress: Adequate rest is essential for recovery, especially if you are feeling fatigued. Stress management techniques such as yoga, meditation, or deep-breathing exercises can also help regulate your menstrual cycle.

5. Follow-Up with Your Doctor: Since you have already experienced significant changes in your menstrual cycle and have symptoms of anemia, it is advisable to follow up with your healthcare provider. They may recommend further tests, such as blood tests to check your hemoglobin levels, hormone levels, or imaging studies to assess the uterine lining.

6. Consider Medication: Depending on the underlying cause of your irregular periods, your doctor may suggest hormonal treatments to help regulate your cycle. This could include birth control pills or other hormonal therapies that can help balance your hormones and reduce heavy bleeding.

In conclusion, while experiencing two menstrual cycles in one month can be alarming, it is essential to approach the situation with a comprehensive understanding of your health. By monitoring your symptoms, making dietary adjustments, and maintaining open communication with your healthcare provider, you can take proactive steps toward managing your menstrual health. If your symptoms persist or worsen, do not hesitate to seek medical attention for further evaluation and treatment.

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