<unk>  is defined as a failure to conceive after one or more years of unprotected intercourse.<unk>  is divided broadly into primary and secondary<unk>  where primary<unk>  is failure to conceive and secondary<unk>  is failure to conceive after a previous pregnancy. Multiple factors play a role in conception and<unk>  such as healthy spermatozoa, regular ovulation, patent fallopian tubes, normal uterine cavity etc.
Infertility
Primary amenorrhea
Secondary amenorrhea
Precocious puberty
Menorrhagia
Salpingitis
Ovarian disease
Delayed puberty