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Why is my daughter’s period so heavy?

It’s common for teenage girls to have heavy or irregular periods as their bodies mature. However, very heavy bleeding that impacts daily activities or occurs frequently may signify an underlying issue that requires medical attention.

What is considered a heavy period?

During a normal period, women lose around 2-3 tablespoons of blood over 3-5 days. A heavy flow means soaking a pad or tampon every 1-2 hours, passing large clots, and bleeding through clothes or bedding. This usually lasts more than 7 days.

Key signs of a heavy period include:

  • Bleeding that soaks through one or more pads/tampons every 1-2 hours
  • Needing to use double sanitary protection (pad + tampon)
  • Passing blood clots larger than a quarter
  • Waking up to change pads during the night
  • Bleeding that lasts longer than 7 days

What causes heavy periods in teenagers?

There are several possible reasons for heavy menstrual bleeding in adolescent girls:

Common causes include:

  • Hormonal changes – Irregular ovulation and fluctuating hormone levels are common during puberty. This can lead to heavy bleeding.
  • Uterine abnormalities – Issues like fibroids or polyps in the uterus can cause increased blood flow.
  • Clotting disorders – Problems with blood clotting factors can result in prolonged, heavy periods.
  • Pregnancy complications – Heavy bleeding may occur with miscarriage or ectopic pregnancy.
  • Medical conditions – Thyroid disorders, liver disease, or pelvic infections are linked to abnormal uterine bleeding.
  • Medications – Blood thinners, antidepressants, and chemotherapy drugs can sometimes increase menstrual flow.
  • Intrauterine devices (IUDs) – Heavy periods are a common side effect, especially in the first 3-6 months after insertion.

When should you see a doctor?

It’s advisable to consult a gynecologist if your daughter experiences any of the following:

  • Bleeding lasts more than 7 days
  • Changing pads every 1-2 hours
  • Passing large blood clots
  • Severe pain during periods
  • Fatigue or shortness of breath from blood loss
  • Periods interfering with school or activities

Seek urgent care if heavy bleeding is accompanied by:

  • Prolonged dizziness/fainting
  • Sudden, severe abdominal pain
  • Fever or chills

These may indicate a serious underlying problem requiring emergency treatment.

How is heavy menstrual bleeding diagnosed?

To diagnose the cause of heavy periods, the doctor may:

  • Ask about medical history and period symptoms
  • Conduct a physical exam
  • Order blood tests to check for anemia, thyroid issues, or bleeding disorders
  • Perform an ultrasound to look for uterine abnormalities like fibroids
  • Do a pregnancy test to rule out complications
  • Examine the uterine lining with endometrial biopsy

Keeping a menstrual calendar tracking flow, pain levels, and clots can help the doctor evaluate patterns.

Common diagnostic tests include:

Test Purpose
Complete blood count (CBC) Checks for anemia from blood loss
Coagulation panel Assesses blood clotting function
Thyroid panel Screens for thyroid problems
Pelvic ultrasound Visualizes uterine structure for abnormalities
Pregnancy test Rules out complications like miscarriage
Endometrial biopsy Examines uterine lining tissue

How are heavy periods treated?

Treatment depends on the underlying cause but may include:

Medication options:

  • Hormonal birth control – Oral contraceptives or the Mirena IUD can help regulate menstrual cycles and reduce flow.
  • Tranexamic acid – This anti-fibrinolytic medication helps stabilize clots to reduce heavy bleeding.
  • NSAIDs – Ibuprofen or naproxen sodium provides pain relief and can slow heavy flow.
  • Combined hormonal pills – Estrogen-progestin pills may regulate ovulation and stabilize the uterine lining.
  • Gonadotropin-releasing hormone (GnRH) analogs – These suppress ovulation and reduce bleeding.

Non-medication approaches:

  • A heating pad, warm baths, and massage provide comfort for menstrual cramps.
  • A sanitary product designed for a heavy flow may help manage bleeding.
  • Rest during the heaviest flow days.
  • Increase iron intake through diet or supplements to replace lost iron.

Medical procedures:

  • Endometrial ablation – Destruction of the uterine lining to reduce bleeding.
  • Uterine artery embolization – Blocking blood vessels to decrease flow to fibroids.
  • Myomectomy – Surgical removal of fibroids.
  • Hysterectomy – Removal of the uterus. This is a last resort option.

What home remedies help with heavy periods?

Some natural remedies to help address heavy menstrual bleeding include:

  • Taking 500-1000 mg vitamin C daily to support hormone balance and clotting.
  • Drinking herbal teas with raspberry leaf, green tea, or turmeric to provide soothing antioxidants.
  • Applying a hot water bottle or heating pad to the lower abdomen for comfort.
  • Practicing yoga poses like child’s pose and bound angle pose to stretch and relax the pelvis.
  • Boosting iron intake with molasses, dried fruits, or nuts to replace lost iron and prevent fatigue.
  • Avoiding caffeine and alcohol which can worsen bleeding.
  • Trying supplements like omega-3, magnesium, or vitamin B6 which may help regulate menstruation.

What lifestyle changes help manage heavy periods?

Making certain lifestyle adjustments can also help when dealing with heavy monthly bleeding:

  • Maintain a balanced, nutritious diet with plenty of iron, vitamins, and minerals.
  • Stick to a regular sleep schedule and reduce stress through yoga, meditation, or counseling.
  • Exercise moderately – intensive workouts could worsen heavy bleeding.
  • Limit strenuous activity and take rest during heavy flow days.
  • Use double protection with a pad and tampon changed often.
  • Wear dark clothing that won’t show stains.
  • Carry extra pads, tampons, and clothes when out.
  • Track periods to identify patterns causing excessive bleeding.

When to see a doctor for heavy periods?

Consult your gynecologist right away if your daughter experiences:

  • Bleeding more than 1 week per cycle
  • Changing pads every hour or less
  • Bleeding interfering with normal activities
  • Passing large blood clots
  • Severe cramping or pain during period
  • Dizziness, weakness from blood loss

Seek emergency care for:

  • Heavy bleeding with fever, chills, or foul odor
  • Sudden, severe abdominal pain
  • Lightheadedness, rapid heart rate, fainting

These can indicate a potentially serious problem requiring prompt medical treatment.


In summary, heavy periods are not uncommon in teenage girls as their bodies mature. However, frequent or prolonged heavy menstrual bleeding can often signify an underlying disorder. Seeking medical advice is important to determine the cause, rule out serious conditions, and find appropriate treatment. With proper care, most period problems can be managed effectively.