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Hi, Dr. Mo here with JA. Please let me review the information and I'll reply shortly.
If you are comfortable sharing a picture of what you're concerned about then feel free to upload it here.
However, based on what you have described it's not anything serious. Chances are that the was caused a mild yeast infection. You don't necessarily have to treat this because it often resolves on its own.
How bad is the itchiness?
Any other symptoms?