### 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 it is about to the cycle, inexplicable diarrhea, basically menstruation will come within two days.
### Errors: There is a major error of incorrect translation has stylistic problems at "If it is about to the cycle, inexplicable diarrhea". There is a major error of incorrect translation is missing content from the correct translation at "If you are near the cycle and you have diarrhea for no reason at all". There is a major error of problems with grammar, other than orthography at "basically menstruation will come".

### 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.