Does a menstrual cup leak?

Menstrual cups are designed to prevent leaks, but like any menstrual product, they can leak if not used correctly. Here’s a breakdown of why a menstrual cup might leak and how to ensure a secure fit:

✅ Why a Menstrual Cup Might Leak

  1. Incorrect Insertion
    If the cup doesn’t fully unfold inside the vagina, it may not create a proper seal. Without a seal, blood can escape.

  2. Wrong Size
    Using a cup that’s too small or too large for your anatomy can lead to leaks. Many brands offer different sizes based on age, childbirth history, and flow.

  3. Overflow
    On heavy flow days, the cup might fill up quicker than expected. Most cups hold more than a regular tampon, but still need to be emptied every 4–12 hours.

  4. Improper Placement
    A menstrual cup should sit lower than a tampon but still be fully inside the vaginal canal. If placed too high, it may shift and leak.

  5. Weak Pelvic Floor Muscles
    If your pelvic muscles are weak or you’ve recently given birth, your cup may not stay in place as securely.

💡 How to Prevent Leaks

  • Check the Seal: After inserting, gently rotate the cup or run a finger around the base to ensure it has fully opened.

  • Empty Regularly: Especially on heavy days, don’t wait the full 12 hours—check every 4–6 hours at first.

  • Try Different Folds: Some people find better results using the “punch-down” or “C-fold” insertion methods.

  • Use Backup on Heavier Days: Consider wearing period underwear or a pantyliner with your cup at first.

  • Choose the Right Size: Follow the brand’s size guide or consult your doctor if unsure.

🌟 Popular Menstrual Cup Brands

Here are some trusted brands known for leak protection:

  • DivaCup – One of the most popular and long-standing brands.

  • Saalt Cup – Offers soft and original firmness options.

  • Nyx Collection – Eco-friendly, medical-grade silicone, with great comfort and leak-proof performance.

  • Cora Cup – Comfortable and great for beginners.

💤 Can You Sleep in a Menstrual Cup?

Yes! As long as it’s inserted correctly and not already full, a menstrual cup can be worn overnight without leaks.

✨ Final Thought

A menstrual cup should not leak when inserted properly. If you’re experiencing leaks regularly, it might be worth experimenting with a different size or brand, or reviewing your insertion technique.

Let your cup work for you, not against you! 💖

Need help choosing a cup or sizing? Drop your questions in the comments or check out our full Menstrual Cup Guide.

Back to blog