Seeing blood clots during your period can be alarming, especially if you’ve never noticed them before. Most of the time, small menstrual blood clots are a completely normal part of a heavier flow. However, in some cases, large or frequent blood clots might suggest an underlying condition that requires medical attention.
Below, we’re examining what causes period blood clots, plus what’s normal (and what’s not) so you know when it’s time to speak with your OBGYN.
What Causes Blood Clots During Your Period?
Menstrual blood is more than just blood. It also contains uterine lining (endometrial tissue), mucus, and other fluids that you shed during menstruation.
As your uterus sheds its lining, your body releases natural anticoagulants that help keep menstrual blood flowing. But if bleeding is particularly heavy, your body may not produce anticoagulants quickly enough to dissolve them. As a result, some of the blood clots before it leaves the uterus.
Period blood clots can appear:
- Bright or dark red
- Jelly-like or thick in texture
- About the size of a dime or quarter
- Occasionally larger during heavier days
Remember: Passing an occasional clot (especially during the first day or two of your period) is common for many women.
When Are Period Blood Clots Considered Normal?
Small blood clots are usually not a cause for concern if they occur during a heavier menstrual flow and are not accompanied by other symptoms.
In general, blood clots are more likely to be normal if they:
- Occur only during your period
- Are smaller than about the size of a quarter
- Happen on your heaviest flow days
- Occur only occasionally
Every person’s menstrual cycle is different, so what is “normal” can vary. The key is paying attention to changes in your usual pattern.
When Should You Be Concerned About Blood Clots?
Menstrual blood clots alone don’t necessarily indicate a problem, but they can sometimes be a sign of heavy menstrual bleeding or an underlying gynecologic condition.
You should schedule an appointment with your healthcare provider if you experience:
- Frequent blood clots larger than a quarter
- Bleeding that soaks through a pad or tampon every hour for two or more hours
- Periods lasting longer than seven days
- Severe pelvic pain or cramping
- Bleeding between periods
- Fatigue, dizziness, or symptoms of anemia
- A sudden change in your menstrual flow
The above symptoms may warrant further evaluation to determine the underlying cause. Together, you and your OBGYN can get to the bottom of your intense symptoms and work on a plan for managing them.
What Conditions Can Cause Large Blood Clots During Your Period?
Several conditions can contribute to heavier menstrual bleeding and larger blood clots, including:
Uterine Fibroids
Fibroids are noncancerous growths that develop within or on the uterus. Depending on their size and location, they can cause:
- Heavy menstrual bleeding
- Large blood clots
- Pelvic pressure
- Frequent urination
- Pain during menstruation
Adenomyosis
Adenomyosis occurs when tissue similar to the uterine lining grows into the muscular wall of the uterus. This condition often causes heavy, painful periods and clotting.
Hormonal Imbalances
Hormones regulate the buildup and shedding of the uterine lining. Conditions that affect hormone levels, such as polycystic ovary syndrome (PCOS), perimenopause, or thyroid disorders, can sometimes lead to heavier periods.
Bleeding Disorders
Less commonly, inherited bleeding disorders or certain medications that affect blood clotting may contribute to unusually heavy menstrual bleeding.
Pregnancy-Related Causes
Heavy bleeding with clots during pregnancy or shortly after a positive pregnancy test should always be evaluated promptly, as it could indicate a miscarriage or another pregnancy-related complication.
How Are Heavy Periods and Blood Clots Evaluated?
If you’re experiencing unusually heavy bleeding, your healthcare provider will start by reviewing your symptoms, menstrual history, and overall health.
Depending on your situation, your provider may recommend:
- A pelvic exam
- Blood tests to check for anemia or hormone imbalances
- Pelvic ultrasound
- Additional imaging or diagnostic procedures if needed
These evaluations help identify the cause of your symptoms and guide treatment recommendations.
What Treatments Are Available?
Treatment depends on the underlying cause of your heavy bleeding.
Options may include:
- Hormonal birth control
- Hormonal IUDs
- Non-hormonal medications to reduce menstrual bleeding
- Treatment for underlying hormone conditions
- Minimally invasive procedures for fibroids or other uterine conditions
- Surgery in select cases
Many women find significant relief once the underlying cause has been identified and treated.
Don’t Ignore Changes in Your Menstrual Cycle
Occasional blood clots during your period are often completely normal, especially during heavy flow days. But if you’re passing large clots frequently or experiencing unusually heavy bleeding, it’s worth discussing with your healthcare provider.
Early evaluation can help identify underlying conditions and provide effective treatment options, allowing you to manage your periods more comfortably and protect your long-term reproductive health.
If something feels off, trust that instinct! Getting support early can make a meaningful difference. We’re here to help: Contact Metropolitan Women’s Group a today to schedule a consultation.
Call 301-513-0200 or request an appointment online today.
