How to get rid of HUGE dark spot really fast? (photo)

On my first day of school, I got a pimple due to extreme heat and humidity I assume. It was really red, painful and big. I tried some natural remedies on it for a week. The pain lessened and somehow I woke up yesterday and the surrounding is really DARK! it's Like I have a huge mole on my face. It's located on my lips so I don't really feel comfortable with it :( How can I get rid of this fast? Is a week possible?

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