Every female is born with the total amount of eggs that her ovaries will hold for her entire lifetime. Before puberty, a female has approximately 400,000 eggs and her egg count has already decreased by puberty. By the age of 30, women’s fertility decreases significantly, and by 40 years old, they have approximately 3% of their egg count. Egg quality also decreases.
Monthly, your ovaries release at minimum, one egg. Should a male’s sperm fertilise your egg, this egg becomes implanted into the womb. Should no fertilisation occur, you will have your period.
By menopause (approximately 51-years-old), the ovaries no longer release eggs. Women with the BRCA1 or BRCA2 gene mutations will likely experience the onset of menopause sooner. After menopause, you are not able to get pregnant naturally.