Burning during urination?

Okay, so I know it could mean that I have an infection. But I don't feel the burning all the time, it's only after I poop and don't have a shower. And it only happens like twice after I poop and don't shower. But if I do have a shower after I poop, it doesn't hurt at all. Please don't be mean, sorry for being so gross but I just need to know. What could this mean? Do any of u other girls have the same problem?
Burning during urination?
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