Common mistakes when inserting the Eureka! Cup self-emptying menstrual cup and how to avoid them

Tiempo de lectura: 5 minutos

If you’re taking the step towards a freer and more comfortable way to experience your period, it’s normal to have questions. Using a menstrual cup, especially one like the Eureka! Cup self-emptying menstrual cup, which empties without needing to be removed, might feel a bit different at first. But don’t worry: you’re not alone, and making mistakes is part of the learning process.

Many users, even those experienced with other menstrual cups, make small mistakes when inserting the self-emptying menstrual cup for the first time. Sometimes it’s about the position, other times not fully understanding how the emptying system works, or simply not being relaxed enough.

In this article, we’ll share the most common mistakes when inserting the Eureka! Cup and, most importantly, how to avoid them. We want you to feel confident from your first use and to enjoy all the benefits of a cup designed to adapt to you.

10 Common Mistakes When Inserting the Eureka! Cup (and How to Avoid Them)

Starting something new always involves a learning curve, and the Eureka! Cup self-emptying menstrual cup is no exception: it’s normal to have doubts or make mistakes at first. Here are the most common ones and how to avoid them, so you can make the most of it from your very first cycle.

1. Not choosing the right size

The Eureka! Cup comes in several sizes to suit each body. Choosing one that’s too large or too small can prevent proper sealing or feel uncomfortable. If you’re unsure, you can check our size guide or contact us.

2. Inserting it without folding or moistening it properly

Another common mistake is trying to insert the cup without folding it properly or without moistening it first. Remember, the cup must be folded: you can use the C-fold or the petal fold, which is usually easier with the Eureka! Cup. Wetting it slightly with water helps a lot, especially if it’s your first few times using it.

3. Not checking the seal once inserted

Once inserted, the cup should fully open to form a seal against the vaginal walls. If it doesn’t open correctly, you may experience leaks. To be sure, gently twist the cup or run your finger around the base to check it’s fully open.

4. Not relaxing your muscles while inserting it

Being nervous or tense can cause your pelvic floor muscles to contract, making insertion harder. Find a calm moment, take deep breaths, and try different positions (squatting, one leg up…) until you find what works for you.

5. Placing it too high or too low

The Eureka! Cup should be inside the vagina, but not so high that accessing the emptying tube is difficult, nor so low that it feels uncomfortable. The tube should be positioned vertically inside the vagina so the emptying system works properly.

6. Leaving it in for more than 12 hours

A common mistake is thinking that because you can empty it without removing it, you can wear the Eureka! Cup for more than 12 hours straight. However, for hygiene and to prevent infections, it’s important not to exceed this limit, even with a light flow. Regular emptying and cleaning are still essential for safe use.

7. Removing it without breaking the seal

To remove the cup, never pull directly on the tube. First, break the seal by pinching the base of the cup with your fingers. This prevents discomfort or pain during removal.

8. Not sterilizing it before and after each cycle

Many focus only on daily cleaning during the cycle and forget to sterilize the cup at the start and end of each period. Besides washing it with water and mild soap, it’s crucial to sterilize it before the first use and after each cycle. You can boil it in a pot for 3–4 minutes or use the Sensual Intim sterilizing cup.

9. Misplacing the self-emptying tube

A key feature of the Eureka! Cup is its exclusive emptying system. For it to work properly, the tube must be fully inserted and positioned vertically in the vagina. If it’s twisted or misplaced, it can be uncomfortable or fail to empty properly. Take your time and use your fingers to ensure it’s sealed correctly.

10. Giving up after a few failed attempts

It’s completely normal to need a few tries to get used to a self-emptying menstrual cup. Many users give up after one or two cycles because they haven’t figured out how to insert or empty it properly. Every body is different, and finding the most comfortable technique can take time. Give it a real chance: once you get the hang of it, you won’t want to use any other cup.

Some tips to avoid common mistakes

We know that using a menstrual cup for the first time — especially a self-emptying menstrual cup like the Eureka! Cup — can bring up doubts. But don’t worry: with a few practical tips, you’ll gain confidence quickly. Here are some tricks to help you avoid common mistakes and feel comfortable with your cup from the very first cycle:

Get to know yourself (and listen to your body)

Every body is different. Take a moment to learn about your anatomy: the height of your cervix, the direction of your vaginal canal, how your body responds to something new… All of this affects how to insert the menstrual cup and which position will be easiest. If it doesn’t feel right at first, that’s normal. Observe, experiment, and adjust.

Try different positions

There’s no one right way to insert the menstrual cup. Many find success squatting, placing one leg on the toilet, or lying down. Find your ideal position and be patient. It’s an intimate moment with yourself.

Fold it well (and moisten it)

The Eureka! Cup is designed to be easy to fold, thanks to its side tabs. You can do a C-fold or try the tab-specific fold (folding from one tab down to the base). Wetting it slightly or using a water-based lubricant can help insert it more smoothly.

Check that it has opened

Once inserted, run your finger around the base to check that the cup has fully opened. If you feel a crease, twist or gently move the cup up or down until you feel that internal “click” indicating it’s sealed correctly.

Position the tube carefully

Once the cup is in place, insert the self-emptying tube so it’s straight and fully vertical inside the vagina. That way, it won’t shift or cause discomfort and will work properly when it’s time to empty it.

Focus on breathing and relaxing

Tension is your worst enemy when using a cup. If you’re feeling nervous or rushed, wait for a calmer moment. Deep breathing, relaxing your abdomen and pelvic floor muscles makes a big difference.

If something feels off, adjust it

The Eureka! Cup menstrual cup shouldn’t be noticeable. If you feel pressure, discomfort, or friction, you probably need to adjust the position or insertion angle slightly. Small tweaks can make a big difference.

Always sterilize it before and after your cycle

A simple trick so you don’t forget: when your period ends, sterilize your cup that same day and store it clean in its pouch. That way, when your next cycle starts, you’ll just need a quick rinse and it’ll be ready to go.

Practice at home before going out

If it’s your first cycle with a self-emptying menstrual cup, there’s no need to start with a full workday or gym session. Try it at home, calmly, without pressure. In just a few days, you’ll notice the difference.

The Eureka! Cup self-emptying menstrual cup is more than just a menstrual cup; it’s a new way to experience your period with more autonomy, comfort, and freedom. Its no-removal emptying system completely transforms your routine: it lets you go about your day without interruptions or discomfort. It’s made of high-quality medical-grade silicone, is gentle on your body, and perfect whether it’s your first cup or you’re already experienced.

If you’re looking for a truly practical alternative designed for your well-being, we encourage you to try the Eureka! Cup menstrual cup. You’ll find it in the Sensual Intim store.