Menstrual cup Myths Busted: What the Experts Really Say About Fit, Comfort, Safety

Key Takeaways:

• All flow protection: Menstrual cups are suitable for all flow levels, including heavy periods, and can provide greater fluid capacity compared to tampons.

• Doctor-Approved Fit: Gynecologists confirm that menstrual cups do not stretch or damage the vagina, and proper fit and insertion technique can enhance comfort.

• Use With Care: Using a menstrual cup is generally safe with an IUD or birth control, provided users follow guidelines to avoid interference with IUD strings.

If you’ve dipped your toes into the world of sustainable period care, chances are you’ve heard a lot about menstrual cups. And just as likely, you’ve heard plenty of rumors, cautionary tales, and head-scratching myths. From worries about them being uncomfortable or unsafe, to confusion about sizing and fit, these little silicone wonders have generated more speculation than a celebrity tabloid. The truth? Menstrual cups are changing lives—making periods less stressful, wasteful, and, yes, way more manageable.

At Saalt, we know that understanding your options is key to feeling confident—and comfortable—about your period, no matter your age or life stage. Whether you're a mama navigating postpartum changes, managing bladder leaks as you stay active, or helping your teen find reliable, eco-friendly solutions, debunking these myths is essential. So let’s sort fact from fiction with insights straight from trusted experts in women’s health. If you’re ready to learn what menstrual cups are really all about and leave the myths behind, you’re in the right place. And remember: making period care decisions based on accurate information (not misconceptions!) paves the way for comfort, confidence, and a truly positive period experience—every single month.

Menstrual cups only work for light periods

Let’s set the record straight: menstrual cups aren’t just for people with light periods. This is one of the most common menstrual cup myths, and it’s simply not true. Menstrual cups actually come in a variety of sizes and capacities, specifically designed to meet different flow levels—even those with heavy periods.

In fact, many experts point out that a properly fitted menstrual cup can hold more than a regular or even a super-absorbency tampon. While tampons hold about 6-18 ml of fluid, some menstrual cups can handle 25-30 ml or more before needing to be emptied. That means fewer trips to the bathroom and less worrying about leaks, even on your heaviest days.

What matters most is finding the right size and style for your body and flow. If you have a heavy period, look for higher-capacity options and try to establish a routine for emptying your cup every 4 to 8 hours. With the right fit, even those with the heaviest periods report more freedom and less fuss than with traditional disposable products.

The bottom line: no matter your flow—light, medium, or heavy—a menstrual cup can be a game-changer when chosen with your unique needs in mind.

A cup will stretch or damage your vagina

We’re officially setting the record straight: menstrual cups do not stretch or damage your vagina. This myth, though persistent, has been debunked by gynecologists and sexual health experts time and again. The vagina is a truly incredible muscle. It’s elastic, designed to stretch and then return to its usual shape—think about what it’s built for, from everyday movement to (for some) childbirth.

Menstrual cups are made from medical-grade silicone or similarly soft, flexible materials. When inserted and positioned correctly, your muscles adjust (just like they do with tampons), and the period cup sits comfortably inside the vaginal canal. It doesn’t push, stretch, or “wear out” anything. After removal, your vagina simply returns to its usual size and shape. (Mayo Clinic)

Worried about using a cup if you’re a teen, haven’t given birth, or have a more petite anatomy? No problem—cups come in a broad range of sizes and shapes, including teen cups, soft cups, cups for low cervix, and high capacity cups. Healthcare providers encourage everyone to listen to their own comfort, experiment if interested, and remember that the vaginal muscles are resilient.

If you ever feel discomfort while using a menstrual cup, it’s more about fit and positioning than any risk of long-term change. In that case, try different folding methods, insertion positions, or cup sizes. And when in doubt, consult with your healthcare provider for peace of mind. Learn here, how to insert a menstrual cup. 

Inserting a cup is messy and painful

It’s a myth that all menstrual cups are a recipe for mess and discomfort. In reality, most people find that with a little practice, inserting a cup is no more complicated—or messy—than using a tampon. The key is understanding that a cup works with your body, not against it.

Pain during insertion often comes down to technique and the cup’s fit. Start by folding the cup into a smaller shape—most popular is the “C-fold” or “punch-down” fold—which makes insertion smoother and more comfortable. It helps to relax your pelvic muscles and find a comfortable position, such as squatting or standing with one leg elevated. A water-based lubricant can make the process even easier. (National Library of Medicine)

As for the mess factor? Sure, the first few tries might not be flawless (what new skill is?), but after a few cycles, the process feels surprisingly clean. Since the cup collects fluid internally, leaks and drips are rare when inserted correctly. Many people are amazed at how much less messy their period feels once they get used to using a cup, compared to pads or tampons.

Remember, menstrual products shouldn’t hurt. If you experience ongoing pain when inserting or removing a cup, it might be worth experimenting with a different size or shape. And if discomfort persists, don’t hesitate to chat with a healthcare professional—your comfort comes first.

You can’t use a cup after childbirth or during postpartum recovery

One of the most common menstrual cup myths is that using a cup isn’t safe or possible after childbirth, especially during postpartum recovery. So what’s the real story? Experts agree: it’s more about timing, healing, and comfort—not a blanket “no.”

After childbirth, your body needs time to heal, regardless of your delivery method. Most healthcare professionals recommend waiting at least 6 weeks after giving birth before inserting anything into the vagina, including menstrual cups. This allows time for your cervix to close, any stitches to dissolve, and the vaginal tissues to recover. Using a cup too soon can risk infection or disrupt healing. Listening to the recommendations of your healthcare provider is key.

But here’s the good news: once you’re cleared by your healthcare provider, menstrual cups remain a safe, comfortable option—even after having a baby. In fact, many people find that cups are more appealing in postpartum life, offering longer wear time, lower cost over time, and better leak protection as they navigate new schedules and demands.

It’s important to note that your body may have changed post-birth. You may need a different size, firmness level (like a soft cup), or shape of cup than you used previously. Listen to your body, and don’t hesitate to ask your provider for advice on sizing or what to watch for as you return to using a cup. Choosing the right fit ensures both comfort and effectiveness, so you can move through this new phase with confidence.

Cups aren’t safe if you have an IUD or use birth control

Let’s set the record straight: using a menstrual cup with an IUD or while on birth control is generally safe, according to most medical professionals. This is one of those menstrual cup myths that just refuses to go away. The confusion makes sense—anyone who relies on their IUD for birth control wants to make sure nothing interferes with it.

Here’s what the experts actually say: Most gynecologists agree that you can use a menstrual cup with an IUD, as long as you follow a few guidelines. The main concern is the IUD strings, which shouldn’t get pulled when you’re inserting or removing your cup. Before you start, it’s a good idea to check the length of your IUD strings with your healthcare provider, and learn to recognize how they feel so you know if anything changes. You can also request to have the strings of your IUD cut shorter so they do not interfere with cup removal. Read here: Can You Use a Menstrual Cup or Disc with an IUD?

When it comes to birth control pills, patches, rings, or implants, there’s no interaction between your birth control method and a menstrual cup. They operate in totally different ways, and a cup won’t make your birth control any less effective.

What you can do: Break the suction seal before removing your cup and take your time. If you’re ever unsure, talk to your doctor—especially if you’ve just had your IUD inserted. Some doctors recommend waiting a month or two to return to a menstrual cup or menstrual disc after IUD placement for extra caution. Just remember, a little extra gentleness goes a long way for both comfort and safety.

The Bottom Line: Menstrual Cup Myths—Officially Busted

After sorting through the noise, it’s clear: menstrual cup myths just don’t hold up under expert scrutiny. From fears about comfort and fit to worries over safety and leaks, the truth is far more reassuring. Menstrual cups are not only safe and effective when used as directed—they’re also eco-friendly, budget-friendly, and body-friendly, designed for everyone from teens to postpartum moms to women navigating menopause. Yes, it might take some trial and error (and a little getting used to), but with careful selection and the right information, a menstrual cup can transform how you experience your period. (Cleveland Clinic)

At Saalt, we believe that you deserve reliable solutions—whether you’re at work, in the gym, or heading for a night’s sleep—without sacrifice or stress. That’s why we’re dedicated to offering premium reusable cups, discs, and leakproof underwear that fit all bodies at every life stage. We’re not just about products; we’re about empowering you to live leak-free, confidently and comfortably, while supporting sustainable choices and working toward period equity worldwide. Don’t let myths hold you back. Make the switch, and reclaim your freedom, one cycle at a time.

Read Also:

• Can Menstrual Cups Cause Prolapse? Let's Find Out.

• Are You Sure a Menstrual Cup Is for Me?

• Does The Saalt Cup Have PFAS?

Frequently Asked Questions About Menstrual Cup Myths

Are menstrual cups uncomfortable to wear?

Not at all! When used correctly, most users find menstrual cups incredibly comfortable—so much so that you might forget you’re wearing one. It may take a cycle or two to get used to the right fold and placement, but the cup’s soft, medical-grade silicone is designed to move with you. If you’re feeling discomfort, it’s usually a sign to adjust placement or try a different size. Saalt offers a range of fits, making it easy to find what works for your unique body.

Do menstrual cups cause infections?

The risk of infection is very low as long as good hygiene is followed. Always wash your hands before inserting or removing your cup and clean your cup as directed (usually with mild, pH-balanced soap and water). Menstrual cups don’t upset your vagina’s natural balance the way some super-absorbent products can. With proper care, you’re keeping things safe as well as sustainable.

Can menstrual cups get stuck inside?

While it can sometimes feel tricky to remove a cup—especially at first—it cannot truly get "stuck." Your vagina is not a bottomless pit; the cup won’t get lost inside you. If you’re having trouble reaching it, just relax your muscles, bear down gently, and try again. With a little practice, removal becomes second nature.

Is it true that menstrual cups cannot be used by virgins?

Nope, this is a common menstrual cup myth. Virgins absolutely can use menstrual cups! Hymens (if present) come in all shapes and sizes, and using a cup doesn’t “take away” virginity. It’s important to go slow and choose a smaller or softer cup if you’re concerned about insertion, like the Saalt Small.

Can menstrual cups cause toxic shock syndrome?

Menstrual cups have a much lower risk of Toxic Shock Syndrome (TSS) compared to tampons, but it’s still important to use them safely. Make sure to empty and clean your cup every 8-12 hours, and always sanitize it between cycles. Following these guidelines keeps the risk extremely low, letting you focus on comfort and sustainability.

Saalt is on a mission to deliver sustainable period care and empower you with facts—not fear. Still have questions? Reach out—we’re here for you every cycle.

Sources:

1. Grajkowski, A., M. D. (2022, July 7). Menstrual cups: Why the recent increase in popularity? www.mayoclinichealthsystem.org. https://www.mayoclinichealthsystem.org/hometown-health/speaking-of-health/menstrual-cups-vs-tampons-things-you-might-not-know-about-the-cup

2. Van Eijk, A. M., Zulaika, G., Lenchner, M., Mason, L., Sivakami, M., Nyothach, E., Unger, H., Laserson, K., & Phillips-Howard, P. A. (2019, August). Menstrual cup use, leakage, acceptability, safety, and availability: a systematic review and meta-analysis. The Lancet Public Health, 4(8), e376–e393. https://doi.org/10.1016/s2468-2667(19)30111-2

3. Clinic, C. (2025c, November 17). Everything you need to know about Menstrual cups. Cleveland Clinic. https://health.clevelandclinic.org/menstrual-cup