It is not normal for yellow pus to flow from the bottom in the second month of pregnancy. Most of the causes of purulent discharge are vaginitis, and there are different pathogens that cause vaginitis clinically, the most common of which are bacterial vaginitis, trichomonas vaginitis, vaginitis caused by Candida infection, and mycoplasma vaginitis. Need to carry out routine examination of secretions, combined with the nature of the leukorrhea, odor, diagnosis of which pathogenic bacteria infection, you can choose to use local vaginal suppositories under the guidance of the doctor anti-inflammatory treatment, clinical infection of different pathogenic bacteria, take different drugs. You should also pay attention to diet and hygiene habits, not to eat chili, seafood, mutton, etc., timely change of clothing, diligent bathing, pay attention to personal hygiene, re-examination after one week of treatment.