Can a menstrual cup cause cramps? If your cramps feel different or more noticeable while wearing a period cup, the cup's fit, firmness or position may be playing a role.

Menstrual cups have become a popular option for people looking for comfortable, reusable period care. But if you have ever experienced cramps while wearing one, you might wonder: is my period cup to blame?

Sometimes, a menstrual cup may contribute to discomfort or cramping, particularly if the cup is not the right fit for your body or is sitting in an uncomfortable position.

The good news is that small adjustments can often make a difference. Here are some of the reasons a menstrual cup may feel uncomfortable and what you can try.

Why Do Period Cramps Happen?

Period cramps are caused by contractions of the uterus as it helps shed its lining during menstruation.

These contractions are influenced by hormone-like substances called prostaglandins. Higher levels of prostaglandins can lead to stronger contractions and, for some people, more painful cramps.

But if your cramps feel different, become more noticeable when your menstrual cup is inserted, or improve when you remove it, the cup's position or fit may also be contributing to the discomfort.

Can a Menstrual Cup Really Cause Cramps?

Sometimes. A menstrual cup may contribute to cramping or pelvic discomfort if it is not the right fit for your body or is positioned in a way that creates pressure.

Here are some common things to consider.

1. The Cup Is Too Firm

Menstrual cups come in different levels of firmness. A firmer cup can be useful because it may open more easily after insertion, but some people find that a softer cup feels more comfortable.

If a cup creates pressure against the vaginal walls or nearby structures, you may notice discomfort, pressure or cramping while wearing it.

If your cramps consistently improve when you remove your cup, trying a softer or differently shaped cup may be worth considering.

The Inoya Period Cup is made from soft, flexible medical-grade silicone and designed to move comfortably with the body.

2. It's Sitting Uncomfortably

Everyone's anatomy is different, so there is no single perfect position that will feel right for every person.

If your menstrual cup is pressing against your cervix or creating uncomfortable pressure elsewhere in the pelvis, you may experience cramping or discomfort.

If something feels uncomfortable, remove the cup and try reinserting it. When inserting your cup, aim it back towards your tailbone rather than straight upwards and allow it to settle into a comfortable position.

3. The Seal Hasn't Been Released Before Removal

A menstrual cup forms a seal against the vaginal walls to help prevent leaks.

When removing your cup, it is important to release this seal before pulling the cup down. Pulling firmly on a cup before releasing the seal can feel uncomfortable and may create an unpleasant pulling sensation.

Pinch the base of the cup or gently press the side of the cup to release the seal before removing it.

The Inoya Period Cup features a patented removal loop  designed to provide a more secure grip during removal, but the seal should still be released before gently guiding the cup out.

How to Prevent Cramps When Using a Cup

If you notice discomfort while wearing a menstrual cup, a few adjustments may help.

1. Pick the Right Cup

Everybody is different, and menstrual cups vary in size, shape and firmness.

If you are particularly sensitive to pressure, a softer or smaller cup may feel more comfortable. Cervix height, pelvic floor function and your individual anatomy can also influence how a cup feels.

The right cup should feel comfortable once it is in place. Persistent pain or pressure is a sign that something may need adjusting.

2. Practice Your Insertion Technique

Learning to use a menstrual cup can take a little practice, particularly if it is your first time.

These tips may help:

• Try to relax your pelvic floor muscles before insertion.
• Aim the cup back towards your tailbone rather than straight upwards.
• Experiment with different folds to find one that feels comfortable for you.
• Once inserted, check that the cup has opened and feels comfortable.

The punch-down fold and C-fold are both commonly used, but there is no single technique that works best for everyone.

3. Take a Break if You Need To

If your cup continues to cause discomfort despite adjusting the position or trying a different size or firmness, it is okay to take a break.

Period care should not be painful. If you continue to experience cramping, pelvic pain or discomfort when using a menstrual cup, speak with your GP, pelvic health physiotherapist or another qualified healthcare professional.

FAQs About Cramps and Menstrual Cups

1. How Do I Know if My Cup Is Causing Cramps or if It's Just My Period?

It can sometimes be difficult to tell.

If your cramps appear or become noticeably worse after inserting your cup and improve when you remove it, the cup's position, size or firmness may be contributing.

Try repositioning the cup or using a different size or firmness and see whether your symptoms change.

If your period pain is severe, worsening or affecting your usual activities, speak with a healthcare professional rather than assuming the cup is the cause.

2. Can a Cup Press on My Bladder and Cause Cramps?

A menstrual cup sits in the vagina, close to the bladder and urinary tract. In some people, the cup's size, firmness or position may create a feeling of pressure in this area.

If you notice bladder pressure, difficulty urinating or feel that you cannot empty your bladder normally while wearing your cup, remove it and try repositioning it.

If the problem continues, a softer or differently sized cup may be more comfortable. Persistent urinary symptoms should be discussed with a healthcare professional.

3. Can Suction Cause Period Cramps?

Menstrual cups rely on a seal to stay in place and prevent leaks. Some people may experience discomfort if the cup is sitting awkwardly or if the seal is not released before removal.

Before taking your cup out, pinch the base or gently press the side of the cup to release the seal. Avoid pulling the cup out while the seal is still intact.

When Should You See a Healthcare Professional?

Mild period cramps are common, but persistent or severe pain deserves attention.

Speak with your GP or another qualified healthcare professional if:

• Your pain is severe or suddenly becomes worse than usual.
• Your cramps interfere with work, school, sleep or everyday activities.
• You continue to experience pain every time you use a menstrual cup.
• You experience pain outside your period.
• You notice significant bladder or urinary symptoms while using your cup.

Conditions such as endometriosis, adenomyosis and other pelvic health concerns can also cause menstrual or pelvic pain, so it is important not to assume that every new symptom is caused by your cup.

The Bottom Line

Can a menstrual cup cause cramps? Sometimes, a menstrual cup may contribute to discomfort if its size, firmness or position is not right for your body.

Often, small adjustments can help:

• Try a softer or differently sized cup.
• Adjust your insertion technique or cup position.
• Make sure you release the seal before removal.
• Stop using the cup if it continues to cause pain.

Your menstrual cup should feel comfortable once it is correctly positioned. If it does not, listen to your body rather than feeling that you simply need to get used to the discomfort.

At Inoya, we believe period care deserves more thought, including how a product feels and works with your individual body.

About the Author

Helena Uhm
Founder of Inoya | RN, MPH

Helena is the Founder of Inoya, an Australian period care company focused on raising the standard of period care through thoughtful product design, better material choices, transparency and a science informed approach. Drawing on her background as a registered nurse and public health practitioner, Helena is passionate about helping women make informed decisions about their menstrual health and the products they use on and in their bodies.

Last reviewed: September 2026

Medical disclaimer: This article provides general educational information and is not a substitute for personalised medical advice, diagnosis or treatment. Speak with a qualified healthcare professional if you are concerned about your symptoms.