A small period in the first month after biochemistry is not normal and may be caused by an irregular period after a miscarriage. Many women after biochemistry, especially without damage to the endometrial area, the amount of menstruation should be no different from before. For low menstrual flow in the first month after biochemistry, it is possible that the endometrium is not well repaired. If the patient has been having a low menstrual flow afterward, it may be that the hormonal changes in the body are too great, causing the woman to have irregular menstruation. It is recommended that women go to the hospital on the second day of menstruation for a blood test of hormone six, the results of which will show whether the patient has hormonal disorders. Under normal circumstances, there will be no change in menstrual flow in the first month after biochemical pregnancy. After biochemical pregnancy should adjust the physical condition, usually pay attention to light diet, eat less spicy stimulating food, can eat more food containing beans, keep enough sleep, do not stay up late.