A week or two ago I found what I though was a cut about 1-1.5 inches in length located outside of my vaginal lips, stopping about an inch before my anus. I thought maybe I had cut myself while shaving or otherwise accidentally cut myself. I kept the area clean, wore looser clothing, and treated the area with Neosporin. I thought the cut had healed because the area had seemed to become less red in color and I wast experienced any soreness. But today when I checked on the area, it was still red/pink in color and sore to touch, and comes generally more irritated the more I touch and prod at the area to examine it. Upon further examination I realized there was no breakage in the skin, just more of a red and very slightly raised line that seemed to run along some vein. I have no itchiness, or other sores anywhere on my body and have never experienced anything like this before. Is this some sort of fungal infection? What should I do? I have been unable to find information on similar sores/cuts. I have no history of STDs and have been sexually inactive for about 9 months.