→ In lactational amenorrhoea, due to highprolactin level, gonadotropin leveldecreases. → Oral pills are either progestogens orprogestogen-estrogen combinations usedby the females. → Emergency contraceptives includes theadministration of progestogens orprogestogen-estrogen combination orIUDs within 72 hour of coitus. So, lactational amenorrhoea, oral pills andemergency contraceptives involve a role ofhormone.