Feeling that your period is approaching but not coming is due to changes in hormone levels in your body before your period is approaching, causing pelvic blood vessels to dilate and also causing breast tingling, which is when your period is judged to be approaching. However, it is not necessary that menstruation will arrive immediately because it takes time for estrogen and progesterone to withdraw, including time for the endometrium to shed and change. You can observe as many days as possible, as long as it is not more than 7-10 days after the time of menstruation, this is normal. Try to relax and not to be overly nervous and anxious. This is because sometimes excessive anxiety and worry may cause long periods or long delays in menstruation. Patients should relax and also refrain from eating spicy, stimulating and cold foods to avoid delaying menstruation due to stimulation and the presence of menstrual pain when menstruation comes.