You think you know all of the tampon rules, but you could be wrong. Here You don't change your tampon after you pee on it. From a medical perspective, you don't have to change your tampon every single time you relieve.
Although a tampon won't block the flow of urine, some pee might get on the tampon string as the pee Even if your period is light, change it within eight hours.
It can be weird to pee with a tampon in -- especially if the string gets in the way ( ick). But are you supposed to change your tampon every time.
You don't need to change your tampon every time you pee, although you might want to tuck the string into your vagina or hold it out of the way.