###Human: My urethra and labia got suddenly sore and itchy with yellow-green discharge. Please help. ###Assistant: Hi. It could be a pelvic infection, sexually transmitted infection with or without urine infection. Have urinalysis, urine culture, high vaginal swab, strict hygiene. Soft comfortable undergarments. Sitz bath to relieve irritation (sit in warm water recurrently). Drink plenty of water. Avoid condoms to reduce sexually transmitted infection. After HVS (high vaginal swab) collection have tablet Doxycycline 100 mg twice daily and tablet Metronidazole 400 mg 8 hourly for 14 days. Follow HVS report and discuss here for any more treatment. Have a complete check-up and regular treatment of any health issue you have. Sexually transmitted infection, UTI, PID. HVS, urine culture, and urinalysis. Antibiotics after tests, follow reports, discuss here. Strict hygiene, soft comfortable undergarments, sitz bath, use condoms to avoid transmission of infection, plenty of water.