Menstrual Cup Stem Poking You? The Complete Trimming Guide (Do This Before You Give Up)
Menstrual Cup Stem Poking You?
The Complete Trimming Guide
Do This Before You Give Up
Quick answer: If your menstrual cup's stem is poking, scratching, or visibly sticking out, it almost always means the cup is sitting slightly lower than it needs to for your body — and the stem, which is only meant to help you locate the cup for removal, is now doing more than its job.
The fix in most cases isn't a different cup. It's trimming the stem down in small, careful increments using clean, sharp scissors, checked between each cut. Done correctly, this takes less than five minutes and solves the problem permanently.
Here's something almost nobody tells first-time cup users clearly enough: the stem is not supposed to be felt at all once the cup is properly seated. It exists purely as a locating tool for removal — a small handle, nothing more. If you can feel it, see it, or worse, if it's actively poking or scratching, that's not a flaw in you or in the concept of cups.
It's a fixable mismatch between the stem's factory length and your body's actual anatomy, which varies from person to person more than most product packaging admits.
This is, without exaggeration, one of the single most common reasons people abandon menstrual cups in their first cycle — and one of the easiest problems on this entire list to permanently solve. If this is the thing standing between you and actually loving your cup, this guide is for you.
Why This Happens in the First Place
Every menstrual cup, including Tessa's, ships with a stem at a standard factory length — designed to work reasonably well across a wide range of bodies. But "reasonably well across a wide range" inevitably means it's not perfectly calibrated for every body, because vaginal canal length and cervix position genuinely differ from person to person.
There are three specific reasons a stem ends up poking:
1. You have a naturally shorter vaginal canal or a lower-sitting cervix
This is by far the most common reason, and it has nothing to do with anything being "wrong" with your body — it's simply anatomical variation, the same way people have different heights or shoe sizes.
When your cervix sits closer to the vaginal opening, the cup naturally seats higher relative to the canal length, which pushes more of the stem outside than the factory length accounted for.
2. The cup hasn't fully opened or seated
Sometimes what feels like "the stem is too long" is actually the cup sitting lower than its final resting position because it hasn't fully popped open and created suction yet.
This can make the stem feel more prominent than it will once the cup properly settles.
3. Your body position during insertion
Inserting while standing versus squatting versus sitting can change the insertion angle enough to affect how deep the cup initially seats — which in turn affects how much stem is left outside.
The good news: only the first reason requires trimming. The second and third are worth ruling out first, because trimming is permanent — you can't add stem length back.
Before You Trim: Rule Out the Other Two Causes
Don't reach for the scissors yet. Spend one cycle checking these first, because they're free, reversible, and might solve the problem entirely on their own.
Check 1: Has the cup actually opened?
After insertion, run a clean finger around the base of the cup, not the stem. You should feel it fully round and open, not still folded or dimpled anywhere along its rim.
If it hasn't opened, gently rotate it a quarter turn or run a finger around the base to help it pop — this alone often resolves what felt like a "long stem" problem.
Check 2: Try repositioning
Gently push the cup slightly higher using two fingers on the base (never the stem) and see if the poking sensation changes.
If pushing it up even slightly makes the discomfort disappear, your issue may be insertion depth rather than stem length — worth practicing a few more insertions before deciding to trim.
Check 3: Change your insertion position
If you've only tried inserting standing up, try squatting instead (this naturally shortens the effective canal length and can change how the cup settles) before concluding the stem itself is the problem.
If you've genuinely tried all three and the stem is still visible, scratching, or uncomfortable during normal movement — sitting, walking, exercising — then trimming is very likely the right, permanent fix.
The Safe, Step-by-Step Trimming Method
This is not something to rush or do casually with kitchen scissors mid-cycle in a hurry. Do this once, calmly, ideally between cycles when you're not under time pressure.
What You'll Need
- A clean pair of small, sharp scissors (nail scissors work well) — sanitized with rubbing alcohol or boiled water beforehand
- Good lighting
- Your cup, cleaned and completely dry
Insert the cup as you normally would, without the stem trimmed yet
This lets you see exactly how much stem is genuinely poking out under real, worn conditions — not how it looks lying flat on a table, which is misleading.
Note how much is visibly outside, plus a small safety margin
Look at how much stem extends beyond what feels comfortable. Mentally mark that point, but plan to leave roughly 2–3mm more than that as your first cut — you can always trim further, but you cannot undo an overly short cut.
Remove the cup and dry it completely
Wet silicone is harder to cut cleanly and makes it difficult to judge exact length.
Make a small, straight cut across the stem
Cut only a small amount at a time — a few millimeters per attempt, not the whole excess in one go.
Keep the cut straight and clean rather than jagged, which can otherwise create a rough edge that irritates more than the original length did.
Smooth the cut edge
Some people find it helpful to very lightly round off the sharp corners left by the cut, either with the scissors or your fingers, so there's no sharp edge against the vaginal wall.
Reinsert and reassess
Wear the trimmed cup for a few hours during your normal routine — sitting, walking, your usual activities — before deciding whether more trimming is needed.
Comfort while lying still is not the same test as comfort while living your actual day.
Repeat only if needed, in small increments
If it's still slightly noticeable, remove, dry, and trim a small amount more.
This gradual approach protects you from cutting it too short, which is the one mistake that isn't reversible.
Important Safety Notes Before You Start
Never trim the stem all the way off. Even a very short remaining stem or a slightly rounded base gives you something to locate and grip during removal.
Removing it entirely can make the cup significantly harder to reach, especially on a day when your pelvic floor is more tense than usual.
Never trim the base or the rim of the cup itself. The base is structural to how the cup holds its seal; the stem is the only part designed to be adjustable.
Use sharp, clean scissors, not a blade or anything improvised. A clean, precise cut prevents jagged edges that can be more irritating than the original problem.
If you're unsure how much to trim, trim less than you think. You can always go back and trim more in a future cycle. You cannot add length back once it's cut.
What "Trimmed Correctly" Should Feel Like
Once you've trimmed to the right length for your body, here's the honest benchmark: you should not be able to feel the stem at all during normal daily movement — sitting at a desk, walking, climbing stairs, exercising.
The only time you should be actively aware of it is when you deliberately reach for it during removal.
If you're still feeling anything after trimming and rechecking across a full cycle, it's worth revisiting cup size and fit more broadly rather than continuing to trim — at a certain point, persistent discomfort is a sizing conversation, not a stem-length one.
Our complete sizing guide walks through exactly how to figure that out.
Frequently Asked Questions
Yes — trimming the stem is a normal, widely recommended practice and does not affect the cup's core function, which depends on the rim and base creating a seal, not the stem.
The stem exists purely for removal convenience.
No. The stem is designed as an adjustable feature precisely because bodies vary so much — cup manufacturers, including Tessa, expect a meaningful percentage of users to trim it for their own comfort.
As long as some stem or a small rounded nub remains, the cup is still fully usable and removable — it just requires slightly more careful reaching during removal.
It's not a safety issue, just a minor inconvenience until your next cup.
If the poking sensation is isolated to a small, sharp point of discomfort that changes when you adjust your position, it's usually the stem.
If the entire cup feels like "too much" — pressure, fullness, general awareness — that points more toward the cup being a size too large overall, which trimming won't fix.
It's better not to. Use the cup at full factory length for at least one cycle first, so you know exactly how much (if any) needs to come off for your specific body.
Trimming based on guesswork before you've actually worn it risks cutting too much too soon.
The Real Takeaway
A poking stem feels like a bigger problem than it actually is — mostly because it happens in the first few days of a new experience, when everything already feels unfamiliar and a little overwhelming.
But this is, genuinely, one of the most fixable frustrations in the entire menstrual cup learning curve.
Five careful minutes with a pair of scissors, done once, usually solves it permanently.
Tessa's stem is designed with exactly this kind of adjustment in mind — not as an afterthought, but because we know bodies aren't standardized, and a good period product shouldn't pretend otherwise.
If you've been sitting on a "cups aren't for me" conclusion purely because of stem discomfort, this is genuinely worth five more minutes before you give up on it entirely.