How much blood is too much?

TBH, no one is particularly good at measuring amounts of blood, and the defintion of heavy varies from person to person. Medically speaking the average menstruator will lose less than 16 teaspoons or 80ml over the course of their entire period (that the fluid capacity of a SINGLE August Night Pad btw). So a medically defined heavy period is when the fluid loss of your whole period is more than 80ml or lasts longer than 7 days.

A good measurement is based on how often you soak through a pad, and what the texture & consistency of your flow is. Some baselines for ‘too much blood’ are: soaking more than one pad within about 2 hours, any blood clots bigger than a quarter coin, abnormally heavy compared to your regular period, lasts longer than 7 days, OR if your blood flow just seems too heavy for you and is making you nervous - go with your gut feeling!