Infertility is the inability of a sexually active couple, not using any birth control, to get pregnant after one year of trying.Infertility affects more than 3 million couples in the United States. About 40% of cases are due to female factors, 30% are due to male factors, 20% are a combination of both, and in about 10 % the cause is unknown.For pregnancy to occur several things have to happen:An egg must develop in the woman’s ovary,The egg has to be released each month into the fallopian tube (ovulation) A man’s sperm must fertilize the egg in the fallopian tube,The fertilized egg must be able to travel through the fallopian tubes and attach (implant) in the lining of the uterus.