Question

what is the reason between missing period...except pregnancy​

Answer 1

If you are not pregnant, other causes of missed or irregular periods include: Excessive weight loss or gain. Although low body weight is a common cause of missed or irregular periods, obesity also can cause menstrual problems. Eating disorders, such as anorexia or bulimia.

Answer 2

Answer:

The ovaries release an egg in a process called ovulation, which occurs approximately every 28 days. If no sperm fertilizes the egg, a person’s period will usually start about 14 days later.

While a missed period is one of the first signs of pregnancy, there are a variety of other reasons why it can occur.

If a person does not menstruate for 3 months in a row, this is called amenorrhea. This condition affects 3–4 percent of women.