Menstruation delays a few days is normal

Under normal circumstances, women's menstrual cycle is delayed by seven days or seven days in advance, which is a normal physiological phenomenon. Generally, women's menstrual cycle is normal between 21 days and 35 days, but some women's menstrual cycle is irregular, which can also lead to irregular menstrual time. If there is no menstruation for more than 35 days, ovulation symptoms may be ruled out.