Have measured with pregnant paper not pregnant, still do not come what symptom is menstruation

If you rule out the possibility of pregnancy, consider that you are now this is a symptom of irregular menstruation, related to a variety of factors, such as endocrine disorders, mental stress, environment, diet, adenomyosis, etc. If you are not sure you can go to the hospital to do six tests of sex hormones, and then symptomatic conditioning can be.