Itching?

Nyla • Living 20 and carefree in the big LV

So I went to the beach today and we all know that water is NASTY but I showered and stuff but I just feel really dry down there and I’m a little itchy too but the itching was there like a day before the beach today along with a slight smell (smells like pee kinda). But it doesn’t hurt when I pee and there’s not bumps that I see. Does this sound like an STD? Or a yeast infection or something.