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What causes prolonged periods in young females?

This Premium Q&A, reviewed and published, features a real conversation between an iCliniq user and a physician.

Patient's Query

Hello doctor,

I am a 21-year-old female, 5 feet 7 inches tall, and weigh 49 kilograms (108 pounds). My period has been going on for about two to three weeks. The flow varies; sometimes it is normal, and other times it is very light. I am not experiencing any severe pain, but I am a bit concerned because this is not usual for me. I am also not taking any medications or birth control pills.

Please help.

Answered by Dr. Georges Hany Kozah

Education:

MD

Professional Bio:

Experienced Lebanese gynecologist with a passion for women's health and well-being. My journey began with specialty training in esteemed Lebanese hospitals, where I honed my skills and deepened my understanding of gynecology and obstetrics. In 2020, I ventured to Paris to further enrich my knowledge and graduated with distinction, bringing back invaluable insights and expertise to my practice.Throughout my career, I have embraced the diverse facets of gynecology and surgery, specializing in high-risk obstetrics, advanced ultrasound techniques, oncology, colposcopy, and hysteroscopy. My commitment to excellence is reflected in the numerous diplomas and certifications I have earned from esteemed universities in Lebanon and Paris.As a dedicated healthcare professional, I am driven by a genuine enthusiasm for my field and a relentless pursuit of excellence in patient care. I thrive in collaborative environments, where I actively contribute as a team player, leveraging my expertise to achieve optimal outcomes for my patients.With a deep-rooted passion for advancing women's health and a commitment to staying at the forefront of medical innovation, I am poised to make a meaningful difference in the lives of those entrusted to my care.Let's connect and embark on a journey towards healthier tomorrows, together.

This doctor is not available for online consultations on the platform anymore.

Hi,

Welcome to icliniq.com.

I read your query and can understand your concern.

Thank you for sharing these details. It is good that you are paying attention to your menstrual cycle. A period lasting two to three weeks, even if the flow is light or varies, is not considered normal and should be evaluated, especially since the duration is not typical for you.

There are several possible causes. One is a hormonal imbalance, which can be triggered by factors such as stress, sudden changes in weight, being underweight (your body mass index is approximately 17.2), or poor nutrition. Conditions like thyroid dysfunction or polycystic ovary syndrome (PCOS) can also disrupt hormone levels and lead to prolonged or irregular bleeding.

Another possibility is an anovulatory cycle, where you are not ovulating properly. This can cause the uterine lining to shed irregularly or incompletely, leading to light, extended bleeding. Uterine issues such as polyps, fibroids, or a thin endometrial lining may also result in prolonged spotting or bleeding. Additionally, cervical problems or infections, such as cervicitis (inflammation of the cervix, the lower part of the uterus), can sometimes mimic a light, prolonged period. Although less common at your age, bleeding disorders should also be considered if this pattern continues or if there is a family history of such conditions.

You must see a gynecologist (a medical doctor specializing in the female reproductive system) or a primary care provider. They may recommend a pelvic ultrasound to examine your uterus and ovaries and hormone tests, including estrogen, progesterone, luteinizing hormone (LH), follicle-stimulating hormone (FSH), prolactin, and a thyroid panel. A complete blood count (CBC) may be done to check for anemia, and if you are sexually active, screening for sexually transmitted infections (STIs) might be suggested.

In the meantime, it would be helpful to track your bleeding each day, note the flow, presence of clots, and color. Also, watch for any other symptoms such as fatigue, dizziness, or unintentional weight loss. Make sure you are eating enough and managing your stress levels as best as you can.

I hope this helps.

Kindly revert so I can assist you further.

Thank you.

Medically reviewed by iCliniq medical review team
Published At July 18, 2025
Reviewed At November 5, 2025

Education:

MD

Professional Bio:

Experienced Lebanese gynecologist with a passion for women's health and well-being. My journey began with specialty training in esteemed Lebanese hospitals, where I honed my skills and deepened my understanding of gynecology and obstetrics. In 2020, I ventured to Paris to further enrich my knowledge and graduated with distinction, bringing back invaluable insights and expertise to my practice.Throughout my career, I have embraced the diverse facets of gynecology and surgery, specializing in high-risk obstetrics, advanced ultrasound techniques, oncology, colposcopy, and hysteroscopy. My commitment to excellence is reflected in the numerous diplomas and certifications I have earned from esteemed universities in Lebanon and Paris.As a dedicated healthcare professional, I am driven by a genuine enthusiasm for my field and a relentless pursuit of excellence in patient care. I thrive in collaborative environments, where I actively contribute as a team player, leveraging my expertise to achieve optimal outcomes for my patients.With a deep-rooted passion for advancing women's health and a commitment to staying at the forefront of medical innovation, I am poised to make a meaningful difference in the lives of those entrusted to my care.Let's connect and embark on a journey towards healthier tomorrows, together.

This doctor is not available for online consultations on the platform anymore.

Same symptoms don't mean you have the same problem. Consult a doctor now!

Education:

MD

Professional Bio:

Experienced Lebanese gynecologist with a passion for women's health and well-being. My journey began with specialty training in esteemed Lebanese hospitals, where I honed my skills and deepened my understanding of gynecology and obstetrics. In 2020, I ventured to Paris to further enrich my knowledge and graduated with distinction, bringing back invaluable insights and expertise to my practice.Throughout my career, I have embraced the diverse facets of gynecology and surgery, specializing in high-risk obstetrics, advanced ultrasound techniques, oncology, colposcopy, and hysteroscopy. My commitment to excellence is reflected in the numerous diplomas and certifications I have earned from esteemed universities in Lebanon and Paris.As a dedicated healthcare professional, I am driven by a genuine enthusiasm for my field and a relentless pursuit of excellence in patient care. I thrive in collaborative environments, where I actively contribute as a team player, leveraging my expertise to achieve optimal outcomes for my patients.With a deep-rooted passion for advancing women's health and a commitment to staying at the forefront of medical innovation, I am poised to make a meaningful difference in the lives of those entrusted to my care.Let's connect and embark on a journey towards healthier tomorrows, together.

This doctor is not available for online consultations on the platform anymore.

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