Since I let my birth control prescription lapse I haven’t really been keeping track of my menstrual cycle because there is absolutely no chance of pregnancy when you’re not having sex. This is dumb because it means I don’t know when to start taking precautions against underwear stains… and also because I get blindsided by weird mood swings. When I start crying over dumb stuff, like passages from Nietzsche that I didn’t remember and find tragic and moving (while sitting in a conference talk!), I know I must be PMSing.