7 Causes of Heavy Bleeding During Your Period & What to Do

Author: Dr. Surabhi Siddhartha, MBBS, DGO
Consultant, Obstetrician & Gynaecologist at Motherhood Hospital, Kharghar, Mumbai

Heavy periods can disrupt daily life, sleep, work and overall wellbeing. Heavy bleeding during a period, medically called heavy menstrual bleeding or menorrhagia, may involve prolonged bleeding, frequent pad or tampon changes, large blood clots or symptoms of anaemia.

The causes of heavy bleeding during periods can range from hormonal changes to uterine fibroids, adenomyosis, polyps or bleeding disorders. At Motherhood Hospitals, women with persistent or unusually heavy menstrual bleeding can be evaluated to identify the underlying cause and determine the most appropriate treatment.

What Is Heavy Menstrual Bleeding (Menorrhagia)? How Do You Know?

Heavy menstrual bleeding means menstrual blood loss that is excessive enough to interfere with your physical, emotional or daily life.

You may need an evaluation for heavy bleeding during your period if you:

• Need to change a pad or tampon every hour for several hours
• Need to use more than one menstrual product at the same time to control the flow
• Frequently need to change menstrual protection during the night
• Have periods lasting longer than about seven days
• Pass repeatedly large blood clots
• Avoid work, school, exercise or social activities because of bleeding
• Feel unusually tired, dizzy, weak or short of breath during or after your period

Heavy menstrual bleeding should not be defined by duration alone. A period may be considered abnormally heavy when the amount of bleeding is affecting your health or quality of life, even if it lasts less than seven days.

7 Common Causes of Heavy Bleeding During Periods

There are several possible reasons for heavy bleeding during periods. Some are related to structural changes in the uterus, while others are caused by hormonal, medical or blood-clotting conditions.

1. Uterine Fibroids

Uterine fibroids are non-cancerous growths that develop in or around the uterus.

Fibroids that grow close to or distort the uterine cavity can be particularly associated with heavy bleeding during periods, prolonged menstruation and passing clots. Other symptoms may include pelvic pressure, abdominal fullness, frequent urination or fertility concerns.

Ultrasound is commonly used to assess the number, size and location of fibroids.

Treatment depends on symptoms, fibroid characteristics, age and fertility plans. Options may include medicines, hormonal treatment or procedures such as myomectomy in selected cases.

You can read more about uterine fibroids and their treatment.

2. Hormonal Imbalance and Problems with Ovulation

Oestrogen and progesterone help regulate the growth and shedding of the uterine lining.

When ovulation does not occur regularly, the endometrium may continue to thicken and later shed unpredictably or heavily.

This can occur with conditions such as:

• PCOS
• Perimenopause
• Significant changes in body weight
• Some endocrine disorders
• Irregular or anovulatory menstrual cycles

Hormonal imbalance is therefore one of the common causes of heavy bleeding during periods, particularly when periods are also irregular.

3. Adenomyosis and Endometriosis

Adenomyosis and endometriosis are different conditions.

Adenomyosis occurs when tissue similar to the uterine lining grows into the muscular wall of the uterus. It can cause heavy or prolonged periods, severe cramps and pelvic pressure.

Endometriosis occurs when tissue similar to the uterine lining grows outside the uterus. It is more strongly associated with pelvic pain, painful periods, pain during intercourse and fertility concerns, although some women may also report heavy or irregular bleeding.

For more information, read about endometriosis symptoms, diagnosis and treatment.

4. Uterine Polyps

Uterine or endometrial polyps are usually benign growths arising from the inner lining of the uterus.

They may cause:

• Heavy periods
• Bleeding between periods
• Irregular menstruation
• Bleeding after intercourse in some cases

Ultrasound may identify a polyp, while hysteroscopy can allow the doctor to directly examine the uterine cavity and remove certain polyps when treatment is required.

5. Bleeding Disorders

Sometimes the problem is not primarily in the uterus.

Inherited bleeding disorders, including von Willebrand disease, can contribute to unusually heavy menstrual bleeding. Platelet disorders and other problems with blood clotting may also be involved.

A bleeding disorder may be considered especially when heavy periods have been present since adolescence or are accompanied by:

• Frequent nosebleeds
• Easy bruising
• Prolonged bleeding after dental procedures
• Heavy bleeding after surgery
• A family history of unusual bleeding

Blood tests may be required when a clotting disorder is suspected.

6. Copper IUD-Related Bleeding

A copper intrauterine device can increase menstrual flow or cramping, particularly during the months after insertion.

For some women, this gradually improves. For others, bleeding remains troublesome.

If your periods became significantly heavier after insertion of a copper IUD, discuss the pattern with your gynaecologist. Other possible causes should still be considered rather than assuming that the device explains every episode of abnormal bleeding.

7. Thyroid Disorders

Thyroid hormones can influence menstrual regularity.

An underactive thyroid, or hypothyroidism, may be associated with heavier or irregular periods in some women. Other possible symptoms include:

• Fatigue
• Feeling unusually cold
• Constipation
• Dry skin
• Weight changes

Your doctor may recommend a thyroid-stimulating hormone, or TSH, blood test when your menstrual pattern and other symptoms suggest a thyroid problem.

Can PCOS Cause Heavy Periods?

PCOS is commonly associated with irregular or infrequent ovulation.

When ovulation does not occur regularly, the uterine lining can build up for a longer period before shedding. This may result in an irregular period that is unexpectedly heavy or prolonged.

Not every woman with PCOS experiences heavy periods. Some instead have infrequent or absent periods.

If you regularly go for long intervals without menstruating and then experience very heavy bleeding, speak with a gynaecologist about whether anovulatory cycles could be contributing.

Heavy Periods and Blood Clots: When Are They a Concern?

Passing an occasional small blood clot during a heavier part of your period can occur.

However, heavy bleeding and clots during a period deserve medical evaluation when clots are repeatedly large, bleeding is difficult to control or the pattern is different from your usual menstrual cycle.

Frequent large clots can occur because blood is leaving the uterus more quickly than the body’s natural clot-breaking mechanisms can manage.

The important question is not the clot alone, but whether it occurs together with:

• Very heavy flow
• Prolonged bleeding
• Significant pain
• Dizziness or weakness
• Bleeding between periods
• A new change in your menstrual pattern

Heavy Periods and Anaemia: The Connection You Shouldn’t Ignore

Repeated heavy menstrual bleeding can cause iron-deficiency anaemia.

When blood loss exceeds the body’s ability to replace iron, haemoglobin levels may fall.

Possible symptoms include:

• Persistent tiredness
• Weakness
• Dizziness
• Headaches
• Pale skin
• Shortness of breath
• Palpitations
• Reduced ability to exercise or concentrate

A complete blood count, or CBC, can help determine whether anaemia is present. Your doctor may also check iron stores when appropriate.

Treatment may include iron replacement, but correcting the iron deficiency alone is not enough if the underlying cause of the heavy periods continues.

The source of the abnormal bleeding also needs to be investigated and treated.

When to See a Gynaecologist for Heavy Periods

Do not ignore persistent heavy bleeding during periods, especially when it represents a change from your usual cycle.

Consult a gynaecologist if:

• You are soaking through menstrual protection every hour for several hours
• Your periods regularly last longer than seven days
• You repeatedly pass large blood clots
• Heavy bleeding interferes with your normal activities
• You feel dizzy, weak, breathless or unusually tired
• You have severe pelvic pain
• You bleed between periods
• You have bleeding after intercourse
• Your menstrual pattern has suddenly changed
• Heavy periods began after starting a new medicine or inserting an IUD
• You have symptoms suggestive of anaemia

You can learn more about the gynaecology services at Motherhood Hospitals, including evaluation of menstrual and abnormal bleeding concerns.

When Is Heavy Bleeding an Emergency?

Seek urgent medical care if bleeding is extremely heavy and accompanied by:

• Fainting or severe dizziness
• Shortness of breath
• Severe weakness
• Severe or worsening pelvic pain
• Possible pregnancy
• Sudden heavy bleeding that is very different from your usual period

Bleeding related to miscarriage or ectopic pregnancy is not the same as menstrual bleeding. If pregnancy is possible and you are experiencing heavy bleeding or severe pain, seek prompt medical assessment.

How Is Heavy Menstrual Bleeding Diagnosed?

The first step is understanding the pattern of bleeding.

Your gynaecologist may ask about:

• How long your periods last
• How frequently you change menstrual products
• Whether you pass clots
• Bleeding between periods
• Menstrual pain
• Pregnancy possibility
• Medicines and contraception
• Previous pregnancies and surgeries
• Family history of abnormal bleeding

Depending on your symptoms and age, investigations may include:

Blood Tests

Blood tests may be used to check:

• Haemoglobin and anaemia
• Iron levels where appropriate
• Thyroid function
• Pregnancy
• Blood clotting where a bleeding disorder is suspected

Pelvic Ultrasound

Ultrasound can help identify conditions such as:

• Fibroids
• Adenomyosis
• Ovarian abnormalities
• Changes in the uterine lining

Hysteroscopy

Hysteroscopy allows a doctor to look directly inside the uterine cavity using a thin camera.

It may be useful when polyps, submucosal fibroids or another abnormality inside the uterus is suspected.

Endometrial Sampling

In selected women, the doctor may recommend sampling tissue from the uterine lining.

Whether this is necessary depends on factors such as age, bleeding pattern, risk factors and ultrasound findings. It is not automatically required for everyone with heavy periods.

Treatment Options for Heavy Period Bleeding

The best treatment depends on the cause of heavy bleeding during periods, the severity of symptoms, age, medical history and whether future pregnancy is planned.

Treatment	When It May Be Considered
Tranexamic acid	A non-hormonal medicine that may reduce menstrual blood loss in appropriate patients
NSAIDs	May reduce menstrual pain and blood loss in some women
Hormonal contraceptive pills	Can help regulate cycles and reduce menstrual bleeding in suitable patients
Progestogen treatment	May be used for certain hormonal or anovulatory bleeding patterns
Hormonal intrauterine system	Can significantly reduce heavy menstrual bleeding for suitable women
Treatment of thyroid or other medical conditions	Used when an underlying systemic condition contributes to bleeding
Hysteroscopic polyp or fibroid removal	May be considered when a growth inside the uterine cavity is responsible
Myomectomy	Removes selected fibroids while retaining the uterus
Endometrial ablation	May be considered for selected women who do not wish to become pregnant in the future
Hysterectomy	Definitive treatment in carefully selected cases when other approaches are unsuitable or unsuccessful

Treatment should be individualised. For example, a woman who wants future pregnancy may need a very different approach from someone who has completed her family.

Motherhood Hospitals’ abnormal bleeding services focus on identifying the cause before deciding on treatment.

Can Home Remedies Stop Heavy Bleeding During Periods?

Searching for how to stop heavy bleeding during periods with home remedies is common, but home remedies should not replace medical assessment when bleeding is unusually heavy.

A nutritious diet and adequate iron intake can support general health, especially if you are losing significant amounts of blood. However, foods, herbal preparations or household remedies cannot reliably treat causes such as fibroids, adenomyosis, polyps or a bleeding disorder.

If you are experiencing heavy bleeding:

• Track how long it lasts
• Note how frequently you change pads or tampons
• Record whether you pass large clots
• Pay attention to dizziness, weakness or breathlessness
• Seek medical advice if the pattern is persistent or worsening

Do not start a medicine to stop heavy bleeding during periods without knowing whether it is suitable for you.

Menstrual Hygiene During Heavy Periods

Heavy menstrual flow can make hygiene more difficult, especially when frequent product changes are needed.

Change pads, tampons or other menstrual products as recommended for the product you use, and choose an absorbency that matches your flow. If you are repeatedly leaking despite frequent changes, that itself may be a sign that the bleeding needs assessment.

Good menstrual hygiene can improve comfort and reduce irritation, but it does not treat the underlying reason for abnormal bleeding.

You can also read about menstrual hygiene management for practical guidance.

Heavy Menstrual Bleeding Care at Motherhood Hospitals

At Motherhood Hospitals, evaluation of heavy menstrual bleeding begins with understanding your menstrual pattern and identifying whether the problem is hormonal, structural or related to another medical condition.

Depending on the findings, care may involve medicines, hormonal treatment, hysteroscopy, treatment for fibroids or other gynaecological procedures when clinically indicated.

Women in Kharghar can consult Dr. Surabhi Siddhartha, Consultant, Obstetrics & Gynaecology at Motherhood Hospital, Kharghar, Mumbai. Her profile lists general gynaecology and minimally invasive surgery among her areas of practice.

FAQs

Conclusion

There are several possible causes of heavy bleeding during periods, including uterine fibroids, hormonal or ovulatory changes, adenomyosis, polyps, bleeding disorders, copper IUD use and thyroid problems.

Occasional variation in menstrual flow can occur, but persistent heavy bleeding during a period should not simply be accepted as normal, especially when it interferes with daily activities or causes symptoms of anaemia.

Identifying the underlying cause allows treatment to be tailored to your health, symptoms and future reproductive plans.

If you are experiencing unusually heavy periods, you can consult a gynaecologist at Motherhood Hospitals by calling +91 96203-96203, writing to writetous@motherhoodindia.com, or booking an appointment.