You have a lot of chances of getting pregnant if you are in your 20s. According to a research you are at the best fertility level when you are 24. From medical prospective, 20s is the best decade for getting pregnant. She is at the highest fertility level at the age of twenty four. Every woman is born with millions of eggs at the time of birth. But only 300000 eggs are released during reproductive years. Out of 300000 eggs only four hundred eggs are released from the ovaries. Age is a very big factor in case of fertility. With the increasing age, eggs also become less viable and less in numbers.