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Why Is Your Period So Heavy This Month?

Published on 05/10/25

Heavy periods, also known as menorrhagia, can sometimes cause worry, especially if they occur unexpectedly. If you have noticed an increase in bleeding this month, you may be wondering, “Why is my period so heavy this month?”

Several factors can contribute to heavier-than-normal menstrual bleeding, and understanding the possible causes can help you address the issue. Let us explore the common reasons for heavy periods and offer guidance on when to seek medical advice.

Hormonal Imbalances and Their Impact on Menstrual Flow

Hormonal imbalances are among the most common causes of heavy periods. Estrogen and progesterone, the two primary hormones regulating the menstrual cycle, play a key role in the thickness of the uterine lining.

If estrogen levels are too high in relation to progesterone, the lining may become excessively thick, leading to heavier bleeding when it sheds. This imbalance can happen during puberty, perimenopause, or due to certain health conditions like polycystic ovary syndrome (PCOS).

Additionally, hormonal fluctuations caused by stress, changes in diet, or excessive weight loss can disrupt the normal balance of estrogen and progesterone. In some cases, this can lead to prolonged periods or an increase in bleeding. If you experience sudden changes in your period’s heaviness, it is best to consider your hormonal health as a potential cause.

Uterine Conditions: Fibroids, Polyps, and Adenomyosis

Uterine conditions such as fibroids, polyps, and adenomyosis can significantly impact the heaviness of your period. Fibroids are noncancerous growths in the uterus that can cause increased bleeding, pain, and pressure.

Similarly, uterine polyps are small, benign growths that can affect the lining of the uterus and cause heavy bleeding during menstruation. These conditions are often diagnosed through pelvic exams, ultrasounds, or MRIs.

Adenomyosis, a condition where the tissue that normally lines the uterus grows into the muscle wall, can also lead to heavy periods. Women with adenomyosis may experience longer and heavier periods, along with pelvic pain.

If you have been diagnosed with any of these conditions, it may be time to talk to your doctor about management options to address the heavy bleeding.

The Role of Medications in Heavy Periods

Certain medications can contribute to heavy menstrual bleeding. Blood thinners, for example, are designed to prevent blood clots but can make it harder for your body to stop bleeding, leading to heavier periods. Intrauterine devices (IUDs) containing copper are another common cause of increased menstrual bleeding, although this is often temporary.

Some other medications, such as those used to treat endometriosis or hormonal therapies, can also impact menstrual flow. It is important to check with your healthcare provider to determine if any prescribed medications may be contributing to your heavy periods. They can help adjust or recommend alternatives to help regulate your cycle.

How Blood Disorders Affect Menstrual Bleeding

Certain blood disorders can affect your ability to form blood clots, which can result in prolonged and heavy periods. Conditions such as von Willebrand disease, platelet function disorders, and hemophilia are associated with clotting deficiencies that can make menstruation more challenging.

Women with these disorders may notice that they experience heavier periods compared to those without bleeding disorders.

If you suspect that a blood disorder may be contributing to your heavy periods, it is important to seek a thorough evaluation. A doctor can perform tests to check for clotting issues and recommend appropriate treatments to manage the symptoms.

Understanding the link between blood disorders and heavy bleeding is needed for managing your menstrual health.

The Influence of Stress on Your Menstrual Cycle

Stress is another factor that can disrupt your menstrual cycle, leading to changes in period heaviness. When you are stressed, your body releases cortisol, a hormone that can affect your overall hormonal balance. This disruption can lead to irregular periods, including heavier flows or missed periods altogether.

Stress can also exacerbate underlying conditions such as PCOS or fibroids, leading to more pronounced symptoms, including heavier bleeding. Managing stress through techniques such as meditation, yoga, or exercise may help regulate your menstrual cycle and reduce the impact of stress on your periods.

Changes in Lifestyle and Diet that Can Cause Heavy Bleeding

Changes in lifestyle and diet can sometimes lead to heavier periods. For instance, rapid weight gain or loss can affect your hormonal balance, which in turn can influence the heaviness of your periods. Poor nutrition, especially a lack of iron or other essential nutrients, can also lead to irregular periods and excessive bleeding.

Increased physical activity or significant changes in exercise routines can impact your menstrual flow as well. Athletes, for example, may experience heavier periods due to changes in body fat percentage or increased physical stress.

If you suspect that lifestyle changes are contributing to your heavy periods, it may help to consult with a healthcare provider to address any underlying concerns.

Signs of Heavy Menstrual Bleeding to Watch for

Heavy periods are often accompanied by specific signs that can help you identify when the bleeding is more than just normal menstruation. For example, if you find yourself needing to change a pad or tampon every hour for several consecutive hours, this is a clear sign of heavy bleeding. Additionally, passing large blood clots or having a period that lasts more than seven days can also indicate menorrhagia.

Other symptoms to watch for include feeling fatigued, dizzy, or short of breath, which may suggest anemia due to blood loss. If you notice any of these symptoms, it is important to seek medical advice for proper diagnosis and treatment. Tracking the changes in your period can give valuable information to your doctor.

The Impact of Thyroid Disorders on Menstrual Health

Thyroid disorders, both hyperthyroidism and hypothyroidism, can have a significant impact on your menstrual cycle. The thyroid gland produces hormones that regulate metabolism, but it also plays a role in regulating menstrual flow. When thyroid hormones are out of balance, it can disrupt the regularity and heaviness of your periods.

In cases of hypothyroidism, where the thyroid is underactive, you may experience heavy, prolonged periods due to an imbalance in hormone regulation. On the other hand, hyperthyroidism, or an overactive thyroid, can cause lighter periods or even missed periods altogether.

If you suspect a thyroid disorder is affecting your menstrual cycle, a blood test can offer insight into your thyroid hormone levels and guide appropriate treatment.

Treating thyroid disorders often involves medication, such as thyroid hormone replacement therapy for hypothyroidism or medication to control hyperthyroidism. Once the thyroid disorder is addressed, your menstrual flow may return to normal.

Perimenopause and Its Effect on Menstrual Flow

Perimenopause, the transition period leading up to menopause, is a time when many women experience changes in their menstrual cycles. As your body approaches menopause, hormone levels fluctuate, often causing irregular periods and changes in flow. During this time, estrogen and progesterone levels may become imbalanced, leading to heavier or longer periods.

Increased bleeding during perimenopause is common due to the uterine lining thickening more than usual before shedding. Some women may also notice that their periods become heavier as they move through perimenopause. It is important to monitor these changes and speak to your healthcare provider, especially if the bleeding becomes excessive or if you experience symptoms such as pelvic pain or blood clots.

Although perimenopausal symptoms are a natural part of aging, it is required to differentiate between normal perimenopausal changes and more serious conditions, such as uterine fibroids or cancer. Your doctor can help assess your symptoms and recommend appropriate treatment options.

How Pregnancy and Miscarriage Can Cause Heavy Bleeding

Pregnancy can sometimes be a factor in heavy bleeding, especially in the early stages. Some women may experience heavy bleeding during implantation or early pregnancy, which can be mistaken for a normal period. However, this bleeding is usually lighter and shorter than a typical menstrual cycle.

On the other hand, miscarriage can also result in heavy bleeding. If you experience heavy bleeding along with severe cramping or other pregnancy-related symptoms, it could indicate a miscarriage. In these cases, the bleeding is often accompanied by tissue or clots, and it may last longer than a typical period.

If you suspect that pregnancy or miscarriage may be the cause of your heavy bleeding, it is important to seek medical attention immediately. A healthcare provider can conduct tests to determine the cause of the bleeding and give necessary care and support.

When to See a Doctor About Your Heavy Period

If you find yourself asking why is my period so heavy this month and have noticed significant changes in your menstrual flow, it is time to consider seeking medical advice. A doctor can help identify the underlying cause of heavy periods and offer appropriate treatments. Some warning signs that indicate a need for medical attention include periods that last longer than seven days, excessive bleeding, or symptoms of anemia.

Contacting a healthcare provider can help you understand the cause of your heavy periods and present you with options to manage your symptoms effectively. Early intervention is key in preventing complications associated with heavy bleeding, such as iron deficiency or other health concerns.

Take Action with Rosh Maternal & Fetal Medicine

If you are dealing with irregular or heavy periods, it may be time to consult an expert. At Rosh Maternal & Fetal Medicine, our irregular and heavy periods doctor in New York, NY specializes in diagnosing and treating this condition.

Our team can deliver personalized care to help manage your menstrual health. Contact us today to schedule an appointment and take the first step toward understanding and treating your heavy periods.