Eating mangoes before menstruation will not cause delayed menstruation. Mangoes are hot and humid fruits and will not affect menstruation. If there is no pregnancy, it may be caused by endocrine disorder, such as emotional instability, anxiety, insomnia, stressful work or some emotional changes, which may lead to delayed menstruation. It is recommended to take progesterone orally to induce menstruation, 2 capsules once a day for 3 days, and most of them will have their periods within 3-7 days after stopping the medication. Taking progesterone for about 1 hour can cause dizziness, so it is recommended to take it orally before bedtime.