Acidic leukorrhea is not necessarily to menstruation, under normal circumstances, the leukorrhea is clear and transparent, leukorrhea is usually in an acidic environment, there is a sour taste, which is normal, not to menstruation performance. In general, some people come to menstruation before the leukorrhea will increase slightly, and some people because of inflammation leukorrhea will increase, so whether or not to come to menstruation purely from the leukorrhea, usually is not obvious. Some people will have breast swelling and pain before they come to menstruation, and they can judge whether they are going to menstruate by these symptoms. But these are not accurate, the most accurate is to go to the hospital to do ultrasound to see the thickness of the lining, if the thickness of the lining reaches 1.0cm or more, it suggests that menstruation is coming. If the thickness of the lining is below 1.0cm, it means that the lining is still very thin and you have to wait for some time before you want to have your period. Under normal circumstances, the endothelium proliferates, secretes, sheds, and forms menstruation, and only when the endothelium has thickened to a certain degree will it secrete and come to menstruation. So generally if the endothelium reaches 1.0cm or more, it suggests that menstruation is coming soon. The argument that acidic leukorrhea does not necessarily mean that menstruation is coming is not valid.