What is the difference between black and white? 6 days a month.

Menstruation black and accompanied by menstrual advance phenomenon is not normal, consider is caused by endocrine disorders, there may be qi stagnation, blood stasis, palace cold caused, and daily diet, work and rest rules are also related; you should do a good job of abdominal warmth, and to the regular hospital gynecology do sex hormone six, B ultrasound examination.