'Menstrual' in the Bible

"Speak to the {Israelites}, saying, 'When a woman becomes pregnant and she gives birth to a male, then she shall be unclean seven days--as [in] the time of her menstrual bleeding, she shall become unclean.

" 'And you must not {have sex with} a woman to expose her nakedness {during} her menstrual uncleanness.