Hi guys I am wondering if some of you also experienced when you randomly experience that your belly button sting while you pee when you arent or never have been pregnant before ?

What might be the problem? Did I hold my pee too long even though my body didnt gave me signal that I was in need to pee ? Is it some serious ? Since I went many times to a doctor when I have some problems and they always mention it's normal, you dont need to worry it's nothing serious and it kinda makes me mad that they wont take me serious cuz I'm quite young (18) so they must think it's either my hormones or I should stop overthinking.

Advice ?