Longer vagina flap and bumps/slight discoloration on flap?

One of my flaps is slightly longer than my normal flap. The longer flap also looks 'dirty' kind of brown/purple coloration on the very edge of the flap. It's also ribbed/bumpy. I thought I wasn't washing right, but it the coloration won't go away. Do I need a certain cream or is there something wrong with me? Can I do anything about the coloration or texture? It also seems a tad bit dry. Please help! Very embarrassed.