How to Use a Menstrual Cup: A Step-by-Step Guide by an OB-GYN

Menstrual cups look intimidating on the shelf and simple once you've used one. The trick is understanding why each step matters — not just memorizing the motion.

This is the guide I wish every first-time user had before their first cycle. It's the same walk-through I give patients in my clinic, adapted for home use.

A menstrual cup is a small, flexible bell-shaped device made from medical-grade silicone. Unlike pads and tampons, it collects menstrual fluid instead of absorbing it — which means no drying of the vaginal canal, no fibers left behind, and up to 12 hours of protection from a single insertion.

Let's walk through exactly how to use one.

Before You Start: 3 Things That Change Everything

Most first-time discomfort has nothing to do with the cup — it has to do with the setup. Before you touch the cup, get these three things right:

Now for the steps.

Relax your pelvic floor. A tense pelvic floor makes insertion feel impossible. Take three slow exhales and consciously drop your shoulders and jaw — pelvic tension mirrors upper-body tension.
Use water or a water-based lubricant. A wet cup slides in with almost no resistance. Silicone-based lubricants damage silicone cups — always water-based.
Give yourself an unhurried 10 minutes for the first insertion. Bathroom door locked, phone away. Rushing is the single most common cause of a bad first experience.

Step 1: Wash Your Hands

Not optional and not negotiable. Warm water, mild soap, 20 seconds. If you're inserting or removing a cup, your hands are inside a mucosal environment — treat it like a mini-medical procedure. Rinse thoroughly so no soap residue transfers to the cup.

Step 2: Fold the Cup

A rigid bell-shape won't fit through the vaginal opening — you have to fold it into something narrower first. The three most reliable folds:

If one fold isn't working, try another — the "best" fold is genuinely personal. For a full visual walk-through, see our 7 menstrual cup folds guide.

C-fold (U-fold) — flatten the cup, then fold in half so the rim forms a "C." Easiest to learn. Wider insertion point.
Punch-down fold — press one point of the rim down into the base of the cup with your index finger. Creates the smallest possible insertion point. Best for first-timers, low cervix, and tighter fit.
7-fold — flatten, then fold one top corner diagonally down. A middle ground: smaller than C-fold, easier to open than punch-down.

Step 3: Find Your Position

Your position matters more than most people realize. Three that work for almost everyone:

Whichever you choose, relax your abdomen and pelvic floor. If you're bearing down, tensing, or holding your breath, the vaginal canal is narrower than it needs to be.

Sitting on the toilet, knees wider than hips
Standing with one leg on the toilet or tub edge
Deep squat on the floor

Step 4: Insert at an Angle Toward Your Tailbone

Here's where most guides go wrong: you do not insert a cup straight up. The vaginal canal angles back toward the tailbone. Insert the folded cup at roughly a 45° angle, pointing toward your lower back — not toward the belly button.

A cup should sit lower than a tampon, just below the cervix. If it feels too high, you've pushed it past where it needs to go. If it pokes out, either your cervix is very low (in which case you may need a shorter cup — take the fit quiz) or you haven't inserted quite far enough.

If you're not sure where your cervix sits, read our cervix positioning guide.

Step 5: Check the Seal

Once inserted, the cup should unfold and form a gentle suction seal against the vaginal walls. You may hear or feel a slight "pop."

Confirm the seal with two quick checks:

A cup that hasn't fully opened is the 1 cause of leaks. It's worth taking 15 seconds to check.

Finger sweep — run a fingertip around the base of the cup. It should feel round, not folded or dented. If you feel a flat spot, gently press the vaginal wall away from the cup, or rotate the cup a quarter turn.
Gentle tug on the stem — you should feel slight resistance. That resistance is the seal.

Step 6: Wear It (Up to 12 Hours)

Once sealed, you shouldn't feel the cup at all. Walk around, sit down, stand up, use the toilet — if anything feels off, that's your signal that positioning needs adjusting.

On flow and timing:

You can wear a cup while swimming, running, doing yoga, weightlifting, and sleeping. It's fully sealed inside the body — no string, no shifting, no exposure. See our overnight guide for sleeping specifics.

Heavy days: empty every 4–6 hours
Medium days: every 8 hours
Light days: up to 12 hours
Never exceed 12 hours in a single wear

Step 7: Remove the Cup (Pinch the Base — Not the Stem)

This is the step people get wrong most often, and it's the difference between a comfortable removal and a painful one.

Why not the stem? The stem is a locator — a small tab to help you find the cup, not a handle. Pulling the stem while the seal is still active pulls the entire vaginal wall down with it. Uncomfortable at best, and (rarely) can cause cervical irritation.

Well-designed cups have a textured grip at the base specifically so your fingers don't slip during the pinch-and-release. If you're finding removal awkward, that texture is a fit signal — cups without it are harder to remove for many users.

Wash your hands.
Sit or squat and relax your pelvic floor.
Bear down gently — this brings the cup lower and easier to reach.
Pinch the base of the cup (not the stem) to break the suction seal.
Rock the cup gently side to side as you pull it downward.
Empty into the toilet.

Step 8: Clean and Sterilize

Between uses (same cycle): rinse with cool water first (prevents staining), then warm water and a mild, fragrance-free cleanser. Reinsert.

Between cycles: sterilize by boiling for 5–10 minutes in a small pot dedicated to the cup. This is non-negotiable — it's the single most important safety step in cup use.

In a public restroom: empty into the toilet, wipe with toilet paper or a tissue, and reinsert. You can rinse later at home. Many users carry a small bottle of water or unscented wipes for extra confidence, but neither is required.

Full details in our complete cup cleaning guide.

Common Mistakes and How to Fix Them

If leaks or discomfort continue past cycle 2–3, the issue is almost always fit rather than technique. Take the 60-second cup finder quiz for a size recommendation based on your anatomy.

Frequently Asked Questions

Does inserting a menstrual cup hurt?

For most people, no. A cup should not be painful to insert or wear. You might feel awkward at first because it's new, but pain usually means the cup isn't positioned correctly, or the size or firmness isn't right for your body. A comfortable fold, relaxed muscles, and a little water or water-based lubricant make insertion much easier. With practice, it becomes quick and painless.

Is a menstrual cup safe? Can it cause infections?

Menstrual cups are made from non-porous medical-grade silicone that doesn't absorb fluid or harbor bacteria. Unlike tampons, cups collect fluid rather than absorb it, which helps maintain your natural vaginal environment. When used correctly, cleaned properly, and emptied on schedule, cups do not increase infection risk. Wash your hands, sterilize between cycles, and you're safe.

Can a menstrual cup cause Toxic Shock Syndrome (TSS)?

The risk is extremely low. Only a very small number of TSS cases linked to menstrual cups have ever been documented worldwide — significantly lower than the risk from tampons. To stay safe, follow the 12-hour maximum wear time, empty regularly, and sterilize the cup between cycles. If you've had TSS in the past, menstrual cups are not recommended.

Will there be odor if I wear a cup for many hours?

No. When used correctly, a menstrual cup should not cause odor. Menstrual odor usually happens when blood is exposed to air or absorbed into fibers over time. Because a cup is sealed inside the body and made of non-porous silicone, it prevents that. If you ever notice a smell, it's a signal that the cup needs to be emptied, cleaned, or sterilized.

Can I swim or exercise while wearing a menstrual cup?

Yes — swimming, running, yoga, weightlifting, cycling, and high-impact sports are all fine. Once inserted correctly, the cup forms a seal and stays in place through movement. Many people choose cups specifically because they feel more secure during sports than pads or tampons.

How often do I need to empty a menstrual cup?

Most cups can be worn safely for up to 12 hours, depending on flow. Heavy days may need every 4–6 hours; light days can go the full 12. You'll learn your rhythm within 1–2 cycles.

How do I change my menstrual cup in a public restroom?

Easier than it sounds. Empty into the toilet, wipe with toilet paper or a tissue, and reinsert. A rinse is nice but not necessary — a full clean can wait until you're home. Some users carry a small water bottle or unscented wipes for extra confidence.

How long does it take to get comfortable with a menstrual cup?

Most people are fully comfortable by cycle 2 or 3. The first cycle is a learning cycle — expect a few adjustments. By cycle 3, insertion and removal usually take under a minute.

The Bottom Line

A menstrual cup isn't complicated — it just requires a small learning curve most of us weren't taught to expect. Wash, fold, insert toward the tailbone, seal, wear, break the seal at the base, empty, repeat.

If you've had a rough first experience, the fix is almost always fit, not technique. A cup designed for your anatomy — cervix height, pelvic floor tone, canal shape — makes the entire process feel easy.

Not sure which cup fits you? Take the 60-second cup finder quiz →

Prefer a visual walk-through with photos? See the step-by-step with illustrations →

Reviewed by Elena Dolgan, M.D., OB-GYN and founder of Leia. Educational content, not medical advice.

Leia Cup — menstrual cup designed by an OB-GYN for a low cervix. Shop Leia Cup · Find your size