how do menstrual discs work?

Date Updated: 13 May 2026
Read Time: 8 minutes

A menstrual disc is a reusable period product designed to collect menstrual fluid rather than absorb it. Made from soft medical-grade silicone, a menstrual disc sits high in the vaginal fornix, just below the cervix and tucked behind the pubic bone.

Unlike tampons or pads, menstrual discs provide internal leak-resistant protection without absorbing natural moisture. Many users choose menstrual discs because they offer long wear times, high capacity and a more natural feeling once inserted correctly.

The my mimi menstrual disc is designed for up to 12 hours of wear and features a soft suction-free design with an integrated loop tab for easier removal.

Where does a menstrual disc sit?

A menstrual disc sits differently from a tampon or menstrual cup.

Instead of sitting lower in the vaginal canal, a menstrual disc is inserted deeper into the body so it rests beneath the cervix in an area called the vaginal fornix. The front rim of the disc tucks behind the pubic bone, which helps keep it secure during daily movement.

Because the disc sits higher internally, many users find it comfortable during:

walking and exercise
sleeping
work or school
swimming
travel
sport and gym workouts

Helpful related guides:

How does a menstrual disc collect period blood?

A menstrual disc collects menstrual fluid inside the flexible bowl-shaped basin of the disc.

Once inserted correctly, the cervix sits above the disc so menstrual fluid naturally flows into it throughout the day. Unlike tampons, which absorb fluid, a disc simply collects it.

This collection-based design is one reason many users describe menstrual discs as:

more comfortable
less drying than tampons
better for long wear times
more suitable for heavier flows

The my mimi menstrual disc is available in two sizes:

Small: 32ml capacity, equivalent to approximately 5 regular tampons
Large: 61ml capacity, equivalent to approximately 7 regular tampons

For sizing help:

How does a menstrual disc stay in place?

Menstrual discs stay in place because the front rim tucks securely behind the pubic bone.

Unlike menstrual cups, discs do not rely on suction. Instead, the shape and positioning of the disc help support it naturally inside the body.

When inserted correctly:

the back of the disc sits beneath the cervix
the front rim tucks behind the pubic bone
the flexible basin collects menstrual fluid
the disc moves naturally with your body

If a menstrual disc feels uncomfortable, low or unstable, it may not be positioned correctly or the size may not suit your anatomy.

Related troubleshooting:

How does menstrual disc self-emptying work?

One unique feature of menstrual discs is something commonly referred to as “self-emptying” or “auto-dumping”.

During a bowel movement or while sitting on the toilet, pelvic floor pressure can temporarily shift the position of the disc slightly. This may allow some collected fluid to empty into the toilet without fully removing the disc.

After standing up, many users find the disc naturally repositions itself again behind the pubic bone.

This feature can help extend wear time during the day, especially for people with heavier flows.

However, self-emptying does not replace proper cleaning and removal. You should still remove, rinse and clean your disc regularly according to instructions.

More information:

How to insert a menstrual disc

Using a menstrual disc may feel unfamiliar initially, but most users become more comfortable with practice.

Step 1 - Wash your hands

Always begin with clean hands before inserting your menstrual disc.

Step 2 - Fold the disc

Pinch the rim together so the disc forms a narrow shape similar to a taco.

Step 3 - Insert at an angle

Guide the folded disc into the vagina, aiming backwards toward your tailbone rather than directly upward.

Step 4 - Tuck behind the pubic bone

Push the front rim upward so it tucks securely behind the pubic bone.

Step 5 - Check for comfort

If inserted correctly, the disc should feel comfortable and relatively unnoticeable.

More beginner resources:

How to remove a menstrual disc

Removal becomes easier with practice and familiarity.

Step 1 - Relax your pelvic muscles

Sit comfortably on the toilet or squat in a relaxed position.

Step 2 - Hook a finger under the rim or loop tab

Gently hook your finger beneath the front rim or integrated loop tab.

Step 3 - Slowly pull the disc out

Keep the disc level while removing it to help minimise spills.

Step 4 - Empty and rinse

Empty the contents into the toilet, then rinse and clean the disc before reinserting.

The my mimi gentle foaming cleanser is specifically designed for reusable menstrual products.

Helpful removal guides:

How long can you wear a menstrual disc?

Most menstrual discs can be worn for up to 12 hours depending on your flow level.

This longer wear time is one reason discs are popular for:

overnight wear
long work days
school and university
exercise and sport
travelling
swimming and beach days

Why choose the my mimi menstrual disc?

The my mimi menstrual disc is trusted by thousands of customers and designed for comfortable reusable period care.

Features include:

soft medical-grade silicone
suction-free design
integrated loop tab for easier removal
Small and Large sizing options
up to 12 hours of wear
high-capacity leak-resistant design
long-term reusable value

The Large size is generally suited to users over 30 or those who have given birth vaginally, while the Small size is commonly chosen by users under 30 or those who have not given birth vaginally.

Final thoughts

Menstrual discs work by collecting menstrual fluid while sitting securely beneath the cervix and behind the pubic bone. Their flexible suction-free design, long wear time and reusable convenience have made them increasingly popular among people looking for alternatives to pads and tampons.

Whether you are completely new to reusable period care or comparing options, learning how menstrual discs work can make insertion, comfort and troubleshooting much easier.

Looking to make the switch? Explore the my mimi menstrual disc today.

Health Notice: This article is for information purposes only. It is not a substitute for medical advice. If you are experiencing symptoms of anxiety, depression or other mental health concerns, consult a qualified health professional.