The tampon isn't positioned correctly If, after insertion, the tampon string gets inadvertently tucked beside the tampon itself rather than hanging freely, it can create a tiny channel It's not the right size or absorbency for your flow
Tampons Leak After Giving Birth at Robert Goldsmith blog
You've worn it too long and it's fully saturated
Luckily, there are simple ways to prevent leaks and stay protected all day long.
Change your tampon regularly the key here Leaving a tampon in for too long can cause it to become saturated and start to leak Setting a reminder on your phone can also help you remember to change your tampon regularly. If you find that you are leaking through your tampon after just four hours, it’s time to start using the next absorbency up.
There are a couple of reasons tampons leak Either you are using one that isn't the right fit for your vagina and your period is leaking around it, or you are flowing fast enough that the tampon is getting full before you change it. Change your tampon frequently keeping on top of changing your tampon can help keep leaks to a minimum If changing your tampon every time you go to the bathroom works for you, then that’s what you should do.
If your tampon keeps leaking, even when it’s not full, you’re not alone
The sneaky string tuck another subtle but significant issue that can contribute to bypass leaks is the string tuck problem