How many eggs in a follicle?

The number of eggs in a woman's ovaries decreases from conception to birth to puberty to menopause. At birth, a woman might have around one million eggs -- a number that drastically decreases to around 300,000 by puberty. Between 300 and 500 of the remaining eggs will experience ovulation before menopause; the remaining eggs will degenerate as a result of pregnancy, use of Birth Control, and other hormonal fluctuations.