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Why Does My Menstrual Cup Leak?

Menstrual cups are reusable flexible feminine devices that are inserted inside a woman’s vagina. It collects and catches menstrual blood fluid rather than merely absorbing them.


A menstrual cup consists of a bell-shaped cup and stem. The former seals against the vaginal wall while the latter is not protruding from the opening of the vagina. In some cases, the stem can be trimmed.

The proper way to insert this device is to first fold or pinch it. Once it is inside, it will spring to action or if not, like in some cases, the user must reach and twist the cup. Or there will be a need to flex the vaginal muscles.

Unlike tampons and pads, reusable menstrual cups help reduce the amount of non-biodegradable sanitary wastes. Why? Because most menstrual cups are made from medical-grade silicone which are 100% biodegradable. They return to their original state: sand, water and carbon.

Reasons Why Your Menstrual Cup Is Leaking

However, as much as menstrual cups are designed to make women’s monthly flow as comfortable as possible, using one may still pop up windows to problems, inconvenience and discomforts. One of these problems is a leaking menstrual cup. But why does this happen? Are there steps that you can do to prevent leaking? Fret no more, we got you covered in this article.

Improper Insertion

A leak in your menstrual cup could be due to several reasons. It could be due to improper insertion. The placement of the menstrual cup inside the vagina should be low, lower than how a tampon is inserted and just below the cervix. If the cup is not properly inserted, it will not seal the vaginal wall which may lead to leakage. Because of this, the cup will not be able to function as a suction and a collector. Moreover, you most likely would expect a leakage if a cup doesn’t open up after insertion.

Every user should ensure that the menstrual cup is properly inserted by leaning forward and reaching inside if the cup has opened up. You can even rotate the cup so it will pop open.

Heavy Monthly Flow

Another cause of leakage is a heavy flow. A menstrual cup is only capable of containing as much liquid as its capacity. Every woman has a different blood flow. In such cases where you can’t predict the flow, it is highly recommended to check your cup every 3 hours and empty it. And if you constantly have heavy monthly flow, you could go for cups with much higher liquid capacity than what you are using.

Another reason that the cup is leaking is because you are using the wrong size. The right size should fit well inside. If it happens to leak on all sides, it is best to change to a bigger size.

Bowel Movements

Leaking menstrual cups can also be because of bowel movements. Discharging your waste can sometimes cause short leakage or even a loose bowel movement. It is because you put extra pressure on the muscles inside. It sometimes feels as though it will come out but it won’t. Having diarrhea can also cause the cup to move a little. But just like a regular pooping, it should never come out.

Strong Pelvic Floor Muscles

While there are many health benefits to having strong pelvic floor muscles, it might cause your menstrual cup to leak. Strong pelvic floor muscles can cause the vaginal wall to squeeze the cup. What you can do is to use a reusable sanitary pad or liner as a backup or use a firmer menstrual cup. We can recommend the Ruby Cup as they have a firmer range of menstrual cups.

In conclusion, using menstrual cups can take a bit of trial and error. You must ensure the proper way of inserting it because a well-inserted menstrual cup shouldn’t cause any leak at all. Once you and your menstrual cup are comfortable with each other, there will certainly be no more discomfort, inconvenience and problems.

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