For most, no more than two and a half tablespoons or an egg cup full of blood is released every month.
It’s called ‘a period’ because it’s a period of time in your life when something else happens that would not normally do so.
Menstrual blood isn’t the same as the blood you’ve seen if you’ve cut yourself. Menstrual fluid lines the walls of your womb and is called endometrium. It is a mixture of blood, tissue cells and natural secretions from the vagina and cervix and is not harmful in any way.
Menstrual fluid is not always red in colour. It can vary from very light brown to dark (almost black) red and this is perfectly normal. Some girls notice this lighter colour throughout their period, whilst others experience this lighter colour only on the last couple of days.