Are certain forms of masturbation causing urinary frequency.?

Not really: Age/religious beliefs and affiliation have been found to have a significant relationship between masturbation and women. Sex can lead to a UTI due to bacteria contamination. There is so data that female leads to uti. Some actually suggest it lowers UTI risk by "massaging" the urethra abd aiding in bacterial expulsion. Vigorous massage in the area could cause urethral sensitivity and frequency.