FAQ Menstrual Cups


Menstrual cups are quite simply life changing and one of the most sustainable period products available. They are kind to you body and the planet. Finding the best size for your body type is crucial to becoming a successful cup user.

Our in house Vagenius can help you find the right menstrual cup for your body type. Please call us on 0800692876 anytime between 9am-2.30pm Monday to Friday!

There are so many different menstrual cups to choose from - it can be quite overwhelming. Each menstrual cup has its own unique features and not all cups suit all body types.

If you are overwhelmed please give our Vagenius a call, they can help you find the best cup for your body type! Phone 0800692876 between 9am-2.30pm Monday-Friday.

The best way to start is to find the height of your cervix first - please see the video on how to do this in our dropdown below. If you have this measurement before you call us this can make it even easier for us to help you!

Now this is the BIG question! With so many different menstrual cups to choose from this can be overwhelming for a first time cup user. 

Our in house Vagenius can help you find the right menstrual cup for your body type. Please call us on 0800692876 anytime between 9am-2.30pm Monday to Friday!

Please keep in mind that the body changes whilst menstruating: the cervix can move and at times you might need two sizes of menstrual cups to work with your active cervix! (that's why we have a multipack included in our store).

Before your period your uterus relaxes and drops you cervix down lower into your vagina, the entrance to the cervix (os) opens and the blood flows into the vagina. (This may also vary from person to person).

Because of this you may find that your cervix is lower on days 1-3 of your period, requiring a smaller cup. Then on days 3+ you may need a larger cup as your uterus tightens again, lifting your cervix up and slowly back into its normal position.

Take in consideration the following possibilities as well, you may need to call us on our helpline to ensure you are getting the right size cup to cater for any of the following conditions:

  • Prolapse (firmer cup),
  • Very Low Cervix (can feel it just inside the entrance to the vagina)
  • Very High Cervix (cannot find it)
  • Sensitivity (softer cup)
  • Endometriosis (heavy periods and a softer cup)
  • PCOS (heavy periods/irregular periods)


(remember cup width also needs to be considered - below)

The most important factor in choosing the right cup is knowing your cervix height. HERE is a detailed page on cervix height.

If you want to be absolutely sure about your cup size you need to check the height of your cervix every morning during your entire period. Then you can work out which cup would be best in terms of height. But you still need to be sure about the cup width (see below as tampons give a good idea of which cup width you should use).

  • My Cup Size 0 (cup part only) height: 44.5 mm
  • My Cup Size 1 (cup part only) height: 44.5 mm
  • My Cup Size 2 (cup part only) height: 51 mm


(remember cup height also needs to be considered - above)

The general rules of thumb as follows:

  • Petite tampons only →
  • Petite and Small tampons only →
  • Small and Regular Tampons →
  • Regular Tampons only →
  • Regular and Super Tampons →
  • Super Tampons only →
  • My Cup Size 0
  • My Cup Size 0
  • My Cup Size 0 and/or My Cup Size 1
  • My Cup Size 1
  • My Cup Size 1 and/or My Cup Size 2
  • My Cup Size 2

Now this is the BIG question! With so many different menstrual cups to choose from this can be overwhelming for a first time cup user. 

I detailed blog post on how you can find your cervix can be found HERE

Or, our in house Vagenius can help you find the right menstrual cup for your body type. Please call us on 0800692876 anytime between 9am-2.30pm Monday to Friday!

We can steer you in the right direction so that you can find the right size!

Before you use your menstrual cup, you must sterilise it. You can use a sterilising tablet, sterilise your cup in the microwave or sterilise your cup on the stove. See the link below for further information about cup sterilisation.

Inserting the Cup:

It is super important to wash your hands with soap before and after you use any menstrual product.

To make the cup easier to insert, you can rinse it under warm water. When the cup is warm, it’s easier to manipulate.

To insert your cup into your vaginal canal, you must fold it. You can either fold in one side of the cup to make the mouth of the cup smaller, creating a tulip-like shape, or you can flatten the cup and fold it in half length-ways, making the mouth of the cup smaller.

To insert your cup, make sure you’re relaxed. Hold your cup in its folded position with your index finger and your thumb. Gently insert it into your vagina. Your cup will pop open. To make sure that it has popped open, feel the base of your cup and make sure that it’s rounded, soft and bouncy. If the cup hasn’t popped open, twist it to make it pop open properly or remove it and try again.

Your cup shouldn’t be too low that you can feel the stem poking out but you should always be able to reach the stem, so it shouldn’t be too high. If your cup is in correctly, you won’t be able to feel it at all.

If your cup is in the right position but the stem still pokes out, use your scissors to trim your stem to a length that suits you. 

Removing the Cup:

Once your cup is in, it’s recommended that you change it every 4 to 8 hours, depending on your flow. Never leave a menstrual product in your body for more than 8 hours as bacteria can build up.

To remove your cup, get into a comfortable sitting or standing position. Grab the stem and gently wriggle it until you can grab the base of the cup. Pinch the cup at the base to break the seal and gently remove it from your vagina, making sure that it’s upright the entire time. If the cup is tilted in any way, spillage can occur!

The Punch-Down Fold

menstrual cup folds

  1. Start with your cup open
  2. Flatten the cup between your fingers and thumb
  3. Push one side of the rim down towards the inside of the cup
  4. Pinch the sides of the rim together to ensure the cup does not open
  5. Try to make the top as small as possible to make it easy to insert.

The U-Fold or C-Fold

menstrual cup folds

  1. Start with your cup open
  2. Flatten the cup between your fingers and thumb
  3. Fold in half (making a U/C/Heart shape)
  4. Pinch the sides of the rim together and hold firmly

The No Fold Technique

Now this fold is not a fold at all but worth mentioning as we have found that a LOT of people use this technique when they can't get their cup to open!

Basically you DON'T fold your cup. You leave your cup fully open and insert gently. The displaced air helps keep the cup open and this technique can be super helpful if you are having NO luck getting your cup to open.

The 7-Fold / Triangle Fold

menstrual cup folds

  1. Start with your cup open
  2. Flatten the cup between your fingers and thumb
  3. Push one side of the rim down towards the inside of the cup
  4. Fold one side over the other to make the tip as small as possible.
  5. This looks like a tulip bud and is the smallest end you can make with a cup fold.

Empty your cup and then rinse it or wash it with gentle soap or menstrual cup wash before inserting it again. When washing your cup, you can scrub it with your fingers or a sterilised toothbrush. If you do not have access to a private basin where you can clean your cup, make sure that you bring a bottle of water into the bathroom with your so that you can rinse your cup over the toilet.

At the end of your period, sterilize your cup again. Place it out in the sun to dry then pop it into its storage bag or container.

When you are purchasing a cup for the first time it is a good idea to research the materials first to help you make an informed decision as to which type is most suited to your body, environmental views and/or product life expectations.

The most common materials for the manufacturing of menstrual cups are Silicone (LSR) and TPE (Thermoplastic Elastomer). Both are great options but both had their own limitations as well. On first appearance menstrual cups made from either material look the same but have quite different properties.

TPE (Thermoplastic Elastomer)

  • TPE tooling is cost effective and less energy is required to manufacture TPE products.
  • TPE can be re-molded and easily coloured.
  • TPE is recyclable, being able to be melted down and re-purposed after use.
  • Menstrual cups made of TPE have a life of 3-5 years
  • Are soft to the touch
  • Have a high compression strength. This means it can lose its shape over time.
  • TPE can be sterilized but not subjected to chemical sterilization or high temperatures as it can melt easily.
  • TPE is a popular modern day material and gaining popularity due to its cost effective tooling and ability to be recycled.

Medical Grade Silicone (LSR - Liquid Silicone Rubber) 

  • LSR tooling is expensive and silicone needs to be cured after manufacturing adding extra cost to production.
  • LSR has excellent tear strength (tensile strength)
  • LSR is not recyclable but can be ground down and used to create various high impact sporting surfaces.
  • Menstrual Cups made of silicone have a life of 10 years+
  • Have low compression strength. This means it can be placed under large amounts of pressure for a long time. It will maintain its shape for the duration of its life.
  • LSR can be heated to high temperatures for sterilization and can undergo chemical sterilization.
  • LSR is Odor Free and Hypoallergenic. Has the highest compatibility rating for use inside the human body. Is still the preferred material of choice within the medical industry.

With the above information you can now make the very best decision on which material you would like to use inside of your body. Both materials have advantages and disadvantages, but overall are both good choices for the manufacture of menstrual cups. Please contact us if you would like more information on either material.

Yes you can but you might need our Vagenius to help you find the right menstrual cup. Depending on the type of prolapse you have you might need a firmer cup to ensure that your cup stays open. Or, youmight need us to talk you through some techniques for getting you cup in the right place?

More information on prolapse can be found on our prolapse support page HERE

We are here to help you find the right menstrual cup for your body type. Please call us on 0800692876 anytime between 9am-2.30pm Monday to Friday!

The uterus is the size and shape of a small pear, weighing around 113 grams. It is positioned upright with the cervix at its base. The uterus sits between the bladder and the rectum and has enough room to swell up to twice its normal size during menstruation and can carry a baby without affecting its neighbours. The muscles and ligaments of the pelvis provide a safe environment for the uterus to perform its functions effectively. When this perfect environment is compromised the uterus can change in position. This can be caused by a number of things including stress, an accident or trauma, childbirth, etc.

The various possible positions of the uterus are as follows:

  • Normal
  • Retroflexed (tipped towards the rectum and folded over)
  • Retorverted (tipped towards the Rectum)
  • Anteflexed (tipped towards the bladder and folded over)
  • Anteverted (tipped towards the bladder)

Uterus Images My Cup NZ Ltd

Some of the symptoms of a “tipped”, “tilted” Uterus can include:

  • Painful mestruation and Ovulation
  • Irregular Menstrual Cycles
  • Menstrual Cycles that contain clots and are dark in colour
  • Hormone Imbalances
  • Chronic lower back pain (especially during menstruation)
  • Chronic Constipation
  • Chronic Bladder u0026amp; Yeast Infections
  • Endometriosis, Ovarian Cysts and Polyps
  • Fertility problems and miscarriages
  • Unexplained pelvic pain.

Some of these symptoms are considered “normal” but could be caused by having a “tipped” or “tilted” Uterus. Most of the time it doesn’t matter where your uterus is, especially if you do not have any of the symptoms we have mentioned above. But for those who experience severe symptoms the knowledge of the position of their uterus is very important.


Every persons body is different so no one rule applies to all. Many people with “tipped” or “tilted” uteruses find using a cup easy. It really can depend on how much your uterus is tipped either forwards or backwards. Most people find that when they have a more severely tipped uterus they will have to practice which angle wil suit them most when the cup is inserted. This can take a few cycles to get used to.

When inserted correctly the cup should not cause any type of discomfort. If you insert the cup too deep the cup can position itself next to the cervix which will feel very uncomfortable. The menstrual cup needs to be sitting beneath the cervix for optimal comfort. You may need to remove the cup, rinse and reinsert to get it at the angle that suits you.

If the stem of the menstrual cup is hanging too low them you may want to consider trimming the stem to a more suitable length for your needs.

If you are unsure please contact your healthcare professional for more advice.


Period Underwear is designed to absorb your menstrual flow and can be washed and reused.  Better for you and Muma Earth! They can be worn on their own or as a backup with another period product. This depends on your flow!

Remember to keep a watchful eye over your briefs and change them before their capacity is reached.

Our briefs feature a super comfy inbuilt pad with four layers of protection. See How it works

1. We recommend you try them on a lighter day of your period or when you are at home. This is your ‘experiment’ day when you can learn how your briefs work for you.

2. Remember Period Underwear hold different capacities, use that gauge if when you will need to change them if it is less than a day.  Only you know your flow!

3. If you want to change them less often, then wear use them with a menstrual cup or tampon.

4. Now that you’re confident, you can wear your briefs anywhere you like...just not in water!

All brand of period underwear absorb differently. The one thing we do suggest is that you get to know your flow a bit better first. Check with each brand and work out which absorbency might work best for you.

If you think you have a light to regular flow then any of our Love Luna Period Underwear would be perfect to get started with. 

With a heavy, gushy flow you might want to try using a menstrual cup or tampon in conjunction with period underwear to help you feel really safe! Or, just go with a heavy flow brand like Modibodi!

Most period underwear needs to be changed like a pad every 4-8 hours.


This really depends on you and your flow.  If you use them exclusively, we would suggest 7-10 pairs of period underwear per cycle. If you use them in conjunction with a menstrual cup or tampons (as back-up), you might need around 3-5 pairs.            

If you follow all care instructions, during and after you use them, they will last around 9-12 months. Some last a lot longer if they are hand-washed or machine washed in a delicates bag. 

Just remember, rinse after use, and wash in cold water only and line dry.  Avoid bleaches, fabric softener and the dryer.


Copyright © MyCup NZ 2014

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