Hi, It is a point to notice that the swollen labia flared up after you had put on the topical Vagisil cream. It has subsided in a day, which denotes a mild inflammation, probably allergic in origin. What you have got is vulvovaginitis which is an inflammation or infection of the vulva and vagina. Allergic reaction to commonly used products like soaps, vaginal contraceptives, feminine sprays and creams, bubble baths and scented toilet paper can often cause an inflamed vulva and vagina. The flaking skin is due to the chafed skin after inflammation after an allergic reaction. The other possibility that I could think of is any bacterial, fungal or yeast infection which is causing these symptoms. A diagnosis of trichomoniasis has already been confirmed by your gynecologist. The characteristic symptom of trichomoniasis infection is a heavy, thick, yellow-green, fishy-smelling discharge from the vagina. The infection can also cause discomfort during sex, vaginal itching and swelling of the vulva and vagina. Herpes cannot be confirmed as a diagnosis without investigations because sometimes patients may be having the herpes virus without any sores on the body. Laboratory tests for herpes include: the culture of the virus, direct fluorescent antibody (DFA) studies to detect virus, skin biopsy, and polymerase chain reaction (PCR) to test for the presence of viral DNA. So to completely rule out any herpes (although not evident from these symptoms), you should get these tests done. I suggest you follow up with your gynecologist as you need antimicrobials like metronidazole or tinidazole which are available by prescription. You may also need antihistaminics for the allergy and non-steroidal anti-inflammatory drugs to relieve the swelling. Hope I have answered your query. Let me know if I can assist you further. Regards, Dr. Ivan R. Rommstein, General Surgeon