Menstrual blood color: what it says about your health


The blood you see during your period is similar, but not exactly the type of blood you see when you cut your finger. What you see on a pad, tampon, or toilet is a mixture of blood and tissue from the lining of the uterus . How much each of these, along with other factors, will affect the appearance of your menstrual blood.

Menstrual blood is also known as menstrual blood or menstruation. Their appearance changes from day to day during menstruation, in different cycles and in different women.

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What Causes Menstrual Bleeding?

The menstrual cycle is controlled by hormones. These hormones regulate when and if your ovaries are producing eggs. They also regulate the thickening of the lining of the uterus, also known as the endometrium.

Then menstruation begins when hormonal changes cause the endometrium to break down and separate from the wall of the uterus . Excess blood and tissue flows down through the cervix and out of the vagina. This mixture of blood and tissue forms your menstrual cycle or menstrual blood.


The fact that menstrual blood contains cells from the lining of the uterus is just one of the things that distinguishes it from the blood seen when the finger is cut. Another very important difference is how the blood clots or hardens.

If you are healthy, when your finger is cut, it will only bleed until your body responds by releasing substances called clotting factors that stop the bleeding. This usually happens relatively quickly.

During menstruation, blood will flow from small blood vessels that have ruptured when the lining of the uterus was cut. This bleeding will continue until clotting factors and hormonal changes stop the bleeding and resume repair of the uterine lining. However, you usually won't see blood clots like you would from a cut or other injury.

Blood clots can occur during your period, but visible clots are often a sign that something else is going on in your body besides your regular menstrual cycle. In fact, visible clots larger than an inch in diameter are one way that healthcare professionals diagnose heavy menstrual bleeding or menorrhagia .


Your menstrual blood can be liquid and watery or thick and sticky. A thin, watery discharge is usually pink in color, while a thick, sticky discharge is usually brown in color.

These changes are common late in your cycle, after most of the endometrial tissue has shed. These changes can also indicate a decrease in buildup in the lining of the uterus, which is common as a woman nears menopause or if her cycles are mild due to other hormonal causes such as stress or excessive exercise.

Period of blood appearance

The appearance of your menstrual blood can vary greatly from cycle to cycle. It can also change from day to day during the same cycle, and these changes are a window into what is happening inside your body.

Menstrual blood can be described in many ways. It helps to think not only about the amount of bleeding you have, but also the color of the blood and the consistency of the bleeding.

Bright red

The brighter the red color of the blood, the later the bleeding and the faster the blood will pass through the cervix into the vagina . Bright red blood is more likely at the beginning of your period.

Sometimes the blood becomes brighter with spasms. This is due to the fact that when the uterus contracts, seizures occur, which can also lead to increased blood flow.

Dark red

A darker discharge, ranging from dark red to brown or black, indicates older blood or slower flow. For most women, menstrual blood darkens during the cycle. This is because older blood is secreted as deeper parts of the uterine lining shed and bleeding slows down.

Usually, the color of menstrual blood is one or two shades darker than normal bleeding. But you can also see old blood darkening for other reasons. You may have noticed this if you've ever covered your clothes in menstrual blood and waited for it to dry. (It is best to soak this garment in cold water. This will help remove blood stains before they harden).


Some people may notice that their menstrual blood is very pink at some point in their menstrual cycle. It is usually most common at the beginning or end of menstruation, when bleeding is very light.

Pink period blood – nothing to worry about. It is usually just blood diluted with mucus.

Very fat

Menstrual stability is in part a measure of how much endometrium, or uterine lining, is mixed with blood. Usually menstrual blood is slightly thicker than normal blood due to the tissue it contains.

If you see large lumps or clots in your menstrual blood, this could be a sign that you have fibroids . Fibroids are abnormal growths on the wall of the uterus. Although they are not cancerous, they can cause great discomfort and heavy bleeding in some women.

Large blood clots can also be a sign of a miscarriage or ectopic pregnancy. If you experience unusual menstrual bleeding or blood clots, discuss this with your healthcare provider.

Large amount of blood

The amount of menstrual blood is different for different women and the amount of menstrual blood also varies with the menstrual cycle. It is normal for some women to have very low blood flow during menstruation, while others have very strong blood flow.

However, if your bleeding is so heavy and fast that you regularly overfill your menstrual products and / or you need to change them more than once an hour, talk to your doctor.

Extremely heavy and rapid menstrual bleeding can be a sign of an underlying bleeding disorder. This is especially true if you have a family history of bleeding disorders or have ever been treated for anemia .

Normal bleeding period

Menstruation comes in a wide variety of normal values. How wide is the assortment? Health professionals consider the following normal:

  • The menstrual cycle lasts 24 to 38 days;
  • Have cycle times that go up to 20 days throughout the year.
  • Bleeding for four and a half to eight days in a row.
  • Loss of 5 to 80 milliliters (ml) of blood during your period.

It also raises the question of what is normal for you, what may differ from normal on a population scale. Menstrual blood can be thick, thin, pink, or even black. Some people can only use one or two sanitary pads or menstrual cups during the day, while others need to change them every two hours. Some do not have seizures, others regularly use a warm pillow or pain relievers.

Paying attention to how your menstrual blood looks and how your menstrual cycle feels is a great way to understand what is normal for you. Keeping track of your period , on paper or through an app, helps you understand if there is something different than usual that may lead you to seek medical attention.

Abnormal uterine bleeding

Worldwide, up to a quarter of women of reproductive age suffer from pathological uterine bleeding. Abnormal uterine bleeding takes many forms, including periods that:

  • Too together or too far apart
  • Much heavier than you would expect otherwise
  • Lasts longer or shorter than the normal range

Many of these women can benefit from the interventions. Addressing the underlying causes of abnormal uterine bleeding can make a huge difference in their lives. For some people, this is the difference between being successful at work or school and not being able to function.

There are a number of conditions that can be symptomatic of changes in menstrual bleeding. Not all are serious or need medical attention. However, signs that you should see your doctor about your period include:

  • You do not bleed for more than three months if you know you are not pregnant.
  • Going from regular to irregular periods (just having irregular periods in life is not a problem)
  • Bleeding for more than seven days in a row or between periods
  • The bleeding is so severe that pads or tampons dry in as little as an hour or two.
  • Intense pain during menstruation.
  • Fever and malaise after using a tampon can be a sign of toxic shock syndrome .

Frequently asked questions

What is considered abnormal blood color during menstruation?

The color of blood during menstruation ranges from almost black or brown to shades of red and pink, and none of these are considered abnormal. If you are concerned about the color or appearance of the blood in your cycle, talk to your doctor. Other symptoms, such as large clots, severe cramps, and excessively long periods, are often cause for concern.

Is it normal to have visible blood clots during your period?

Yes, it is normal to have small but visible blood clots during your period. Blood can mix with mucus and appear as a clot. However, if you see a clot of a quarter or more, this is not normal and you should call your doctor as it is a sign of menorrhagia.

Get the word of drug information

Tracking your period can also help you determine if you need to change something from your usual state , even if it is not urgent or even urgent. Regular fainting due to heavy periods or painful cramps may be normal, but not necessary.

So if applicable, let the data you collect from your menstrual flow tracker inspire you to speak with your healthcare provider. Another period tracking bonus? He gives you all the information you need to have a good conversation about his departure.

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