Period always ahead of schedule, and then do not go, this time there are half a month, how back pain

You this is the phenomenon of menstrual disorders, and improper diet, mental stress, overwork, endocrine disorders or suffering from endometriosis, cervicitis and other gynecological diseases. You should see a regular hospital B ultrasound examination, screening disease factors. Usually should do a good job of personal hygiene care, frequent change of underwear.