Does medicine have to last three months?

Chinese medicine conditioning menstrual time, sometimes longer than this time, sometimes shorter than this time, it needs to be decided according to the changes in the condition. If the effect in the process of medication is better, this time can be. Sometimes the effect is not good, may need to extend the period. The patient needs to do some tests, causing menstrual disorders most common is endocrine disorders, check a blood endocrine hormone is better, need to check the foundation of endocrine hormones, choose to draw blood on the second day of menstruation is more accurate. However, in addition to endocrine hormone problems, sometimes some uterine lesions will also cause, so you also need to do a uterus and ovary B ultrasound.