What are the causes of delayed menstruation and brown leucorrhoea?

For women who are not sexually active, the possibility of menstruation is high. If menstruation is delayed for a long time, ultrasound or hormonal examination should be performed, and if endocrine disorders are considered, short-acting contraceptives can be used to adjust the menstrual cycle. If a woman is sexually active, a pregnancy test should be carried out to determine intrauterine pregnancy with brown leucorrhoea and to consider pre-eclampsia.