You should not take Xiaoyao pills if you have amenorrhea. Amenorrhea refers to a situation where a person who normally menstruates suddenly stops menstruating for more than six months, which is likely considered secondary amenorrhea. Once menstruation stops, it's important to promptly investigate the cause of the cessation. If it occurs around the time of menopause, then it is likely an indication of menopause. If it happens to women of reproductive age, it is crucial to go to the hospital for checks to determine if there are issues like ovarian dysfunction or polycystic ovary syndrome, or even conditions such as pituitary tumors causing the amenorrhea. Treatment should be based on the results of these examinations, and medication should not be taken blindly. It is also advised to avoid catching cold or becoming overtired, and to avoid spicy and irritant foods.