 [ Symptoms ] pain in testicles lower abdomen rectum is it fatty liver [ Disease ] your girlfriend should see a health care professional about this it is not the kind of thing you should try lancing yourself as that can introduce infection into the wound and cause more problems your description of the lesion makes it difficult to tell if it is a bartholin gland cyst though it does not sound like it these types of cysts occur very close to the vaginal opening like i say your girlfriend needs to see a medical professional about this wishing you well