If menstruation is delayed and the leukorrhea turns yellow, two problems can be described clinically. The first one is the delayed menstruation, and if you have normal sexual intercourse, you have to exclude the problem of pregnancy first. If there is no pregnancy, then it is likely to be caused by endocrine disorders, but also may be caused by organic lesions, so it is recommended to do further examination, first of all, do ultrasound, if there is no tumor found, you can first oral progesterone to promote menstruation, once a day to eat, take two pills a time to eat, take three consecutive days, after stopping the drug will be menstruation for three to seven days. The most common cause of yellowish leukorrhea is local inflammation of the vagina and the cervix, and the causative organisms can be found through routine leukorrhea tests, and then treatment can be given according to the results. If there is localized inflammation of the cervix, it is recommended to take oral anti-uterine inflammation tablets for treatment, but if you are pregnant, the specific medication must be in accordance with the doctor’s instructions to use the medication, can not be unauthorized use of medication.