Irregular Periods: Causes and Concerns for Women - Obstetrics and Gynecology

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Menstrual cycles are becoming increasingly irregular?


I had an intimate encounter with my boyfriend on July 26, during which we used a condom.
Afterward, I promptly showered and cleaned my genital area.
My last menstrual period started on July 6, and now my period is 6 days late.
I have also been experiencing mouth ulcers that have persisted for a week, which is making me a bit anxious.
During the time I had the mouth ulcers, I have been treating them by taking B vitamins, using watermelon powder spray, applying oral ointment, and consuming a lot of kiwis (but there hasn't been any improvement).
For reference, my menstrual cycle used to be regular at 28 or 29 days during high school, but since starting college, it has been increasingly delayed.

Ling, 20~29 year old female. Ask Date: 2018/08/09

Dr. Huang Jianzhong reply Obstetrics and Gynecology


On July 26, I had intercourse with my boyfriend using a condom.
Afterward, I quickly took a shower and cleaned my genital area.
My last menstrual period started on July 6, and now my period is 6 days late.
Recently, I have also had a mouth ulcer that has not healed (lasting for a week), and I am feeling a bit anxious.
During the mouth ulcer period, I have been treating it by taking B vitamins, using watermelon powder spray, applying oral gel, and eating a lot of kiwi (but it hasn't improved).
For reference, my menstrual cycle used to be regular at 28 or 29 days in high school, but since starting college, it has been getting later.

Question: What is the issue...?

Reply Date: 2018/08/09

More Info


Understanding irregular periods can be a source of concern for many women, especially when accompanied by other symptoms such as mouth sores or changes in overall health. Based on your description, it seems you are experiencing a delay in your menstrual cycle, which has been a change from your previously regular cycles of 28 to 29 days. Let's explore the potential causes and concerns surrounding your situation.

Firstly, it is important to note that menstrual cycles can be influenced by a variety of factors, including stress, hormonal imbalances, changes in lifestyle, and even diet. Since you mentioned that your menstrual cycle has become increasingly irregular since starting university, it is possible that the stress of academic life, changes in your daily routine, or even dietary changes could be contributing to this irregularity. Stress is known to affect the hypothalamus, the part of the brain that regulates hormones responsible for menstruation, potentially leading to delayed or missed periods.

In your case, the fact that you had a sexual encounter on July 26, while using protection, generally lowers the risk of pregnancy. However, it is important to remember that no contraceptive method is 100% effective, and the timing of your cycle can also play a role in this. Since your last period started on July 6, a delay of six days could be within the realm of normal variation, especially if your cycles have become irregular.
The mouth sores you are experiencing could be unrelated to your menstrual cycle but may indicate a deficiency in certain vitamins or minerals, such as B vitamins or vitamin C, especially since you mentioned consuming a lot of kiwis, which are high in vitamin C. Persistent mouth sores can also be a sign of stress or other underlying health issues, so it is essential to monitor this symptom closely.

Given that your menstrual cycle has changed and you are experiencing other symptoms, it might be beneficial to consult with a healthcare provider. They can perform a thorough evaluation, which may include a physical examination, blood tests to check hormone levels, and possibly an ultrasound if deemed necessary. This will help rule out any underlying conditions such as polycystic ovary syndrome (PCOS), thyroid disorders, or other hormonal imbalances that could be contributing to your irregular periods.

In the meantime, consider keeping a menstrual diary to track your cycles, symptoms, and any other relevant factors such as stress levels, diet, and exercise. This information can be invaluable for your healthcare provider in determining the cause of your irregular periods.

Lastly, while it is natural to feel anxious about changes in your menstrual cycle, it is essential to approach the situation with a calm mindset. Many women experience fluctuations in their cycles due to various life changes, and with proper care and attention, most issues can be addressed effectively. If your period does not arrive soon or if you experience additional concerning symptoms, do not hesitate to seek medical advice. Your health and well-being are paramount, and understanding your body is a crucial step in maintaining it.

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