Can you get a blockage on your period?

Yes, it’s possible to experience a blockage or obstruction related to your period, though it’s not as common as other menstrual issues like heavy flow, irregular cycles, or cramps. A blockage during menstruation typically refers to a situation where menstrual blood is unable to flow freely from the uterus, leading to symptoms like painful cramping, light or absent periods, or delayed menstruation. Here are a few conditions that can cause a blockage or disruption in your menstrual flow:


1. Cervical Stenosis (Narrowing of the Cervix)

Cervical stenosis is a condition where the cervix becomes narrow or partially blocked, which can prevent menstrual blood from exiting the uterus during menstruation.

Symptoms:

Severe cramping or pelvic pain, especially during your period.

Light or absent periods (you may feel like you’re having a period, but there’s no flow, or the bleeding is very light).

Difficulty with tampon insertion due to the narrowed cervix.

Causes: Cervical stenosis can be congenital (present at birth) or can develop after surgical procedures like a D&C (dilation and curettage) or cervical surgery.


2. Uterine Fibroids

Fibroids are non-cancerous growths that can develop in the uterus, sometimes blocking or distorting the normal flow of menstrual blood.

Symptoms:

Heavy bleeding or prolonged periods.

Pelvic pain and pressure.

Frequent urination or back pain if fibroids are large or pressing on nearby organs.

How Fibroids Cause Blockage: If fibroids grow in certain parts of the uterus (like the cervix or near the opening of the uterus), they can physically obstruct the menstrual flow, leading to complications with how blood exits.


3. Endometriosis

Endometriosis is a condition where tissue similar to the lining of the uterus (the endometrium) grows outside of the uterus, often blocking the fallopian tubes, ovaries, or other areas in the pelvic region.

Symptoms:

Severe pelvic pain, especially during menstruation.

Heavy bleeding, spotting, or painful intercourse.

Painful bowel movements or urination during menstruation.

How Endometriosis Causes Blockage: The presence of endometrial-like tissue outside the uterus can cause scarring, adhesions, and blockages that affect the flow of menstrual blood, leading to delayed or obstructed periods.


4. Imperforate Hymen

An imperforate hymen is a congenital condition where the hymen (the thin membrane that partially covers the vaginal opening) is completely closed, preventing menstrual blood from flowing out of the body.

Symptoms:

No menstrual flow (primary amenorrhea).

Painful cramping and abdominal distention.

The condition often presents during adolescence when a girl reaches puberty and doesn’t start her period.

How It Causes Blockage: The imperforate hymen blocks the vaginal opening, trapping menstrual blood inside the uterus and causing painful swelling in the abdomen.

Treatment: A simple surgical procedure can remove the hymen and allow menstrual blood to flow freely.


5. Pelvic Inflammatory Disease (PID)

PID is an infection of the reproductive organs, usually caused by untreated sexually transmitted infections (STIs) like chlamydia or gonorrhea. The infection can cause scarring and inflammation in the fallopian tubes, ovaries, and uterus, which can lead to blockage and prevent normal menstrual flow.

Symptoms:

Abdominal pain, especially in the lower abdomen.

Irregular periods and spotting.

Pain during intercourse and urination.

How PID Causes Blockage: In severe cases, the infection can cause adhesions or scarring that block the fallopian tubes or uterus, leading to an obstruction in menstrual flow.


6. Asherman’s Syndrome (Uterine Adhesions)

Asherman’s syndrome occurs when scar tissue forms inside the uterus, usually after a surgical procedure like a D&C (dilation and curettage), a miscarriage, or an infection. The scar tissue can cause the uterine walls to stick together, leading to partial or complete blockage of the uterus.

Symptoms:

Absent periods (secondary amenorrhea).

Infertility.

Pelvic pain or cramping.

How It Causes Blockage: Adhesions in the uterus can obstruct the flow of menstrual blood, resulting in light or absent periods.


7. Congenital Uterine Abnormalities

Some women may be born with congenital uterine abnormalities that can cause menstrual blockage. Conditions like a bicornuate uterus (a uterus with two cavities) or a unicornuate uterus (a uterus with only one cavity) can cause physical obstructions to the menstrual flow.

Symptoms:

Irregular cycles or absent periods.

Recurrent miscarriage or difficulty getting pregnant.

How It Causes Blockage: Abnormal uterine structures can prevent the normal passage of menstrual blood from the uterus, causing complications with menstruation.


8. Obesity and Hormonal Imbalances

Severe obesity can sometimes cause hormonal imbalances, particularly an excess of estrogen. This can lead to anovulation (lack of ovulation) and cause periods to become irregular or delayed.

How It Causes Blockage: In some cases, obesity can lead to conditions like PCOS (Polycystic Ovary Syndrome), where the ovaries produce cysts and hormone imbalances that affect menstrual flow. This can result in lack of ovulation or no period.


9. Scar Tissue or Previous Surgeries

If you’ve had any type of surgery involving the reproductive organs, such as myomectomy (fibroid removal) or a cesarean section, there’s a possibility that scar tissue could cause blockages in the uterus or cervix, preventing the normal flow of menstrual blood.


When to See a Doctor

If you experience any of the following symptoms, you should consult a healthcare provider:

Severe pain or cramping that doesn’t go away after your period.

Abdominal swelling or a feeling of fullness that doesn’t resolve.

No period or a period that is significantly lighter than usual.

Painful intercourse, pain during urination, or other unusual symptoms.

Difficulty with tampon insertion or vaginal exams.

Your doctor will typically perform an ultrasound, hysteroscopy, or laparoscopy to evaluate the reproductive organs and determine if there is any blockage or structural issue.


Conclusion

While menstrual blockages aren’t very common, conditions like cervical stenosis, fibroids, endometriosis, imperforate hymen, and adhesions can cause disruptions in menstrual flow. If you suspect a blockage or experience severe pain, irregular periods, or any other unusual symptoms, it's important to seek medical advice. Early diagnosis and treatment can help prevent long-term complications and improve your menstrual health.

Back to blog