Hi my mom is 72 years old, and she said she has to pee a lot and it has a bad smell. She also say she gets cramp a on her privet part. What can tha?

UTI . Your mother may have a urinary tract infection and she should be checked for old age onset diabetes.
Infection . It sounds like she has an infection. She should see her primary care doctor for a urine test and some antibiotics if needed. .