Question

A stage when menstruation and ovulation stops in human females

Answer 1

menopause
It occurs at the age of about 40

Answer 2

Between 50-150ml of blood is released during this period. After the woman's period, the proliferative phase of the menstrual cycle begins. ... If the egg released during ovulation is fertilised and the woman becomes pregnant, the uterine lining stays in place and nourishes the fertilised egg

And that is menopause...