99% normal couples conceive within first year and the remaining 1% will conceive within the next year of unprotected intercourse .
infertility is defined as not being able to get pregnant after at least one year of unprotected intercourse . In order to get pregnant:
A woman must release an egg from one of her ovaries (ovulation).
The egg must meet man’s sperm in the fallopian tube(fertilization)
Fertilized egg should move to the uterus (womb).
The fertilized egg must attach to the inside of the uterus (implantation).
Infertility can result from problems that interfere with any of these steps.