Hello, welcome to HCM! After going through your description of the symptomatic nodule on the innerside of labia minora, I could understand that if I were your treating physician, I would like to consider following possibilities in this case like: 1. urethral caruncle: a nagging inflammatory pathology 2. a small abscess 3. in infected small subepithelial cyst etc. Therefore, you must see a gynecologist for a physical examination and urine test to determine the exact nature of it and you have to take ciprofloxacin group of antibiotics; your doctor must know the local brand...! regards!