Fertility can be defined as a quality of being able to reproduce a child. Fertility is a very common subject, but the condition where there is inability to reproduce the children naturally is known as infertility. Fertility in humans depends on factors such as nutrition, sexual behaviour, culture, timing, emotions and how life is going on. Fertility days are recognised when there is a day when the eggs are released and there is ovulation. These days give more chances for the couples to get pregnant.