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Why your menstrual cup might be leaking

Why your menstrual cup might be leaking

We all know the feeling. You're out and about, enjoying your day when suddenly you feel your menstrual cup leaking. You panic. What do you do? First, take a deep breath. It's not the end of the world. 

But wait… What causes the leakage? When inserting your menstrual cup, you might find that you’re already leaking between the stem and the cup or around the base of the stem. Or maybe your cup just doesn’t feel quite right or even hurts. It's not a bad cup; it's a bad fit. 

It’s often the case that people push too hard when they’re trying to insert their menstrual cup correctly. So you may have inserted your cup too far into your vagina – causing a seal between your cup and the top of your vaginal canal, restricting the blood flow out of your uterus.

We know this all may sound a little scary, but don’t worry. We’re here to help. In this blog post, we'll discuss some of the other reasons why your menstrual cup is leaking and how to prevent it from happening in the first place.

You’re using a menstrual cup for the first time

Many people experience a learning curve when using a menstrual cup for the first time. This phenomenon isn’t exclusive to menstrual cups. When you try something new, even if you’ve done your research, sometimes it just doesn’t work as you expect it to. At first, it can feel like the new product is defective or faulty, but that’s not actually the case.

You could actually call it the ‘learning period’. Learning to use a menstrual cup is different from other methods of period care, like tampon use. On our website, you'll find a whole page of frequently asked questions and answers on how to insert your menstrual cup and the best way to remove it.

You haven't inserted your menstrual cup correctly

Yes, your cup might not be inserted correctly. This is a common cause of leaks. Before using your cup, make sure that it is inserted correctly and that the cup is fully open so that suction can be formed to help prevent a leaking menstrual cup. If you’re using our nüdie period cup, we recommend two types of insertion methods; the 'U/C' shape and the 'punchdown' fold. 

U/C shape

Begin by creating a ‘U’ shape with your nüdie opening – press and hold the sides of your nüdie together, then fold it in half to create a ‘U’. Find a comfortable position and relax your pelvic floor muscles, then gently push the nüdie into the vagina with the tip approximately 1 cm into the vagina. The nüdie will now pop open inside your vagina and create a seal. Use your finger to check if the cup is fully unfolded to prevent leaks.

Punchdown fold

For those with slightly tighter vaginal walls, we'd suggest the punch-down fold as it opens more easily when inside. On one side of the cup, push down with your index finger until the wall of the cup touches the base of the cup. Then insert as above. If you’re having difficulty inserting your nüdie, try wetting your cup with room-temperature water or using a bit of organic lubricant.

You’re wearing the wrong menstrual cup size

It's important to do your research before buying a menstrual cup to determine which size will be most comfortable for you. You may have the wrong size nüdie period cup if you believe you have inserted it correctly but still experience leaking.

Check your size

You can choose from three different sizes of the nüdie period cup according to your life stage:

  • Teen – Perfect for those under 18 or in their early 20’s with strong pelvic floor muscles
  • Size A – Perfect if you are aged 18 to 30 and have not given birth vaginally
  • Size B – Perfect if you have given birth vaginally or are over 30 years old.

If you order a size Teen or A and find it wiggles or leaks, get in touch, and we’ll send you a larger size free of charge.


Top tips: If you can feel the cup moving around, you likely need a larger size. If you find that the ‘Large’ size leaks, then pelvic floor exercises can help strengthen the surrounding pelvic floor muscles. Other possibilities are that you have an unusually positioned cervix. (see FAQ on cervix heights)

Your menstrual cup might be full

When your cup is full, it can leak. Although your nüdie period cup can be worn for up to 12 hours, if you experience a heavier flow, then you may need to empty and clean your menstrual cup every 4-6  hours. You may need to only do this during the first few days of your period when your flow is generally heavier.

Fake leaks or wiping leaks

Seeing blood on your pants right after you have cleaned and reinserted your period cup may seem like it’s been leaking. A lot of the time, when this happens, it is because there may be some leftover water droplets on the outside of your cup that may mix with your period blood.

Normally, if you have one of these leaks, it won't get any worse, and you’ll get a slightly annoying blood stain on your pants. But don’t worry; you can always rely on your favourite remüvie™ stain remover to save the day.

We want to make sure your experience with a menstrual cup is amazing. And that means making sure you understand how to use it. Most of the time, leaks are caused by user error – and it's not your fault. We've all been there, feeling frustrated and a little lost on what to do. 

However, now that you have read this article, we hope you have a better understanding of why your menstrual cup might be leaking and what you can do to fix it so that you can go back to having a worry-free, leak-free period again. 

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