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AIBU?

Share your dilemmas and get honest opinions from other Mumsnetters.

To wonder why my period suddenly smells so bad?

114 replies

OneShyEagle · 22/01/2026 17:55

Sorry, I know this is TMI, but hoping I can get some advice.

I wear tampons, but for security, wear period underwear to bed, as I often bleed too much for a tampon. Aware you’re probably not supposed to use tampons at night, but it’s always been fine for me.

Anyway, this morning I woke up, after having the heaviest day of my cycle, so I had definitely leaked a lot.

The really weird thing is, it smelled awful! This has never happened to me before and I’m late 30’s. I’d say it had a fishy odour. I’m so embarrassed writing this, but wondered if anyone has any suggestions as to why, or has experienced this before?

i washed as normal and have been worrying all day in case I smell, but if there is a smell now, it’s much less obvious than it was.

If anyone has experienced this, I would be so grateful to know what had caused it? Please help a very embarrassed mum.

OP posts:
TheCraicDealer · 22/01/2026 18:14

Do you use fabric conditioner on the pants? That can coat the fibres and make them smellier after a few uses. A bit like how you’re not supposed to use FC on gym gear.

OneShyEagle · 22/01/2026 18:12

The pants had been worn before so were not brand new.

OP posts:
SunnySideDeepDown · 22/01/2026 18:11

Had the pants been washed before use (ie from new, not suggesting you’ve worn dirty pants!). Wondering if any chemicals have made it stink once mixed with blood.

NotHavingAlaff · 22/01/2026 18:09

Vaginosis I mean

Kevinbaconsrealwife · 22/01/2026 18:09

ilparadodosdoltos · 22/01/2026 18:07

Definitely check that you haven’t left a tampon up there. It’s very common and easily done and it smells dreadful! Have a good old root around…

I came in to say this…..have a rootle around just in case x

7238SM · 22/01/2026 18:09

My thought was a left tampon also. You might have added a 2nd one, thinking you'd removed the 1st one. Sometimes, they can lie sideways so not easily felt. You'll need to squat down and forage about I'm afraid to check.

NotHavingAlaff · 22/01/2026 18:08

Possibly bacterial vaginitis

Arlanymor · 22/01/2026 18:08

Sounds like BV: https://onlinedoctor.superdrug.com/vaginal-odours.html

OneShyEagle · 22/01/2026 18:08

I’ve tried to check for a tampon but can’t feel anything.

OP posts:
Balloonhearts · 22/01/2026 18:07

You haven't left a tampon up there, have you?

ilparadodosdoltos · 22/01/2026 18:07

Definitely check that you haven’t left a tampon up there. It’s very common and easily done and it smells dreadful! Have a good old root around…

RudolphTheReindeer · 22/01/2026 18:07

It might just be your pants? Mine definitely get a faint smell if I've had them on overnight or over a long day (I wear them as backup for a mooncup)

UnhappyHobbit · 22/01/2026 18:06

Sorry to hear OP. I don’t have any answers but recently I’ve had a similar thing!

OneShyEagle · 22/01/2026 18:06

I am mortified, and it’s obviously not the sort of thing I want to ask a friend irl.

OP posts:
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