Hello dear Understand your concern. Exact diagnosis should be made by vaginal examination by consulting the gynecologist. Following are the possibility: skene s duct cyst: It require no treatment. But if associated with itching, redness and pain , it require drainage and antibiotics Blocked sweat gland Fordyce cyst Bartholin cyst All this cyst are pain less and harmless genereally. Do not pop up , it causes infection and bleeding But if it is very large and associated with pain, dysuria, fever, itching , redness and started foul smelling vaginal discharge. Then You should think about STDs and would like to test for STDs and And consult to doctor for drianage and take antibiotics. Also maintain hygiene and keep the area dry. Hope this may help you Contact HCM further for health query Best regards Dr. Sagar