Reusable Menstrual Discs Australia | Award Winning - my mimi

Are menstrual discs actually safe for my uterus?

Date Created: 7th of August 2025
Read Time: 6 minutes

Concerns about internal period products are common. In fact, a 2023 survey by Women’s Health Foundation found that over 40% of Australians aged 18 to 45 felt unsure about the safety of menstrual cups or discs, particularly around reproductive health and internal use. The good news? Experts agree that menstrual discs - when used as directed - are considered safe for the uterus and cervix.

Understanding how menstrual discs work

A menstrual disc is a flexible device that sits in the vaginal fornix, just below the cervix. It’s not inserted into the uterus, nor does it press directly against the cervix in a way that causes harm. Instead, it holds menstrual fluid in a wide, shallow basin - much higher than a tampon or cup.

The difference in placement is key. Unlike a menstrual cup that forms suction in the vaginal canal, a disc tucks behind the pubic bone without relying on suction. This makes it an attractive option for many people seeking comfort, ease of use, and compatibility with anatomical variations.

What the research says about safety

There is no clinical evidence that menstrual discs cause damage to the uterus or cervix in healthy users. According to the Royal Australian and New Zealand College of Obstetricians and Gynaecologists (RANZCOG), soft internal period products like discs do not reach the uterus and are considered safe for routine use.

The cervix is strong, muscular, and built to adapt. It dilates during childbirth and adjusts in position throughout the menstrual cycle. While minor sensitivity is possible during insertion, a properly placed menstrual disc should not cause discomfort or trauma.

What about users with IUDs?

A common concern is whether menstrual discs interfere with intrauterine devices (IUDs). Many healthcare providers agree that reusable menstrual discs are generally safe for people with IUDs - as long as users avoid pulling on the IUD strings and do not create suction during removal.

The my mimi menstrual disc is one example of a product with a non-suction design, which can reduce the risk of IUD displacement. It's always wise to check your IUD strings regularly and speak to your doctor before trying a new internal product, especially within the first few weeks after insertion.

Can a menstrual disc push against the cervix?

Not likely. While a disc sits just below the cervix, it doesn’t insert into or apply pressure on the cervical canal. For some users with a low cervix or retroverted uterus, positioning may need adjusting. But for most people, once a disc is inserted correctly, it fits securely and comfortably.

For anyone with a sensitive cervix or pelvic floor condition, such as mild prolapse or chronic pelvic pain, it may take time to find the right technique. Many users report that the learning curve for a disc is gentler than for a cup, which relies on forming a seal.

The role of softness and sizing

One factor that contributes to safety is flexibility. The my mimi disc is made from soft, medical-grade silicone and comes in two sizes - Small and Large - designed for different ages and birth histories.

Small (32ml): Best for those under 30 or who haven’t given birth vaginally
Large (61ml): Designed for those over 30 or who have had a vaginal birth

The soft rim and loop tab make insertion and removal easier, and the disc’s shape allows it to conform to your body. There’s no rigid edge or hard shell, which lowers the chance of irritation.

How long can a disc stay in?

Most menstrual discs are worn for up to 12 hours, depending on flow. The my mimi disc has one of the highest liquid capacities in its category, making it a strong choice for heavy flow days. That means fewer changes, no strings, and fewer leaks - especially overnight or while travelling.

And unlike disposable options, one my mimi disc lasts up to five years. At just $44.95, that works out to roughly 83 cents per month.

Sustainability and safety together

There’s a reason my mimi was awarded Best Sustainable Period Care Solution in Australia 2025. It’s not just about reducing waste. It’s about offering a reliable, comfortable product that puts users' health first. Safety, affordability, and sustainability can coexist — and more people are making the switch.

What to do if you’re unsure

If you’ve ever felt uncertain about whether a menstrual disc is right for you, speak to your GP, gynaecologist, or pelvic floor physio. They can assess your anatomy and give personalised guidance on internal period care.

For most users, menstrual discs are a safe, modern option that support both comfort and confidence.