大姨妈造成我大出血
[dà yí mā zào chéng wŏ dà chū xuè]
In China, 'Aunt Flo caused me heavy bleeding' ('Aunt Flo' is a euphemism for menstruation) refers to a condition where periods result in excessive menstrual flow. It could indicate physical discomfort but might also be a casual, humorous approach toward this medical issue.