Infertility means that couples have been trying to get pregnant with frequent intercourse for at least a year with no success. Female infertility, male infertility or a combination of the two affects millions of couples in the United States. An estimated 10 to 15 percent of couples have trouble getting pregnant or getting to a successful delivery.

Infertility results from female infertility factors about one-third of the time and male infertility factors about one-third of the time. In the rest, the cause is either unknown or a combination of male and female factors