Today the most basic choice is whether or not to menstruate at all.
For instance, some women use it not only to curb premenstrual symptoms, but also to control when they menstruate.
The always-edifying Ann Coulter tweeted that Marines were “protecting his right to menstruate.”
menstruate men·stru·ate (měn'strōō-āt')
v. men·stru·at·ed, men·stru·at·ing, men·stru·ates
To undergo menstruation.