### Chinese: 如果大概到了周期，莫名其妙拉肚子，基本上两天内会来月经。
### English: If you probably reach the cycle, inexplicably diarrhea, basically within two days will come to menstruation.
### Errors: There is a major error at "you probably reach the cycle, inexplicably diar". There is a major error at "hea". There is a major error at "basically within". There is a major error at "days will come to menstruation".

### Improved English: If you are near the cycle and you have diarrhea for no reason at all, you will basically get your period within two days.