About a girl who pees blood.gets cramps in her lower part of her stomach.sometimes can't pee when she feels she needs to.and feels weird when she walk?

Girl needs appt: Those symptoms can be caused by an underlying infection, or some other medical condition. Get an evaluation and testing done by a doctor. Best wishes.

?UTI: This sounds very suspicious for a urinary tract infection. All of the listed symptoms point to that. She needs a doctor appointment tomorrow if already peeing blood. Don't delay any longer or risk the infection spreading to the kidneys if it hasn't already. Drink LOTS of water and/or cranberry juice tonight.