Screen Issue topic

So, It's only 3 weeks since I bought this phone, and last weekend i accidentaly drop it (damn..) but at first glance it didn't have any scratchs. But then the next morning when I turned on my phone I notice a red stain on the booting screen, and then I realized that whenever the screen's color is black, the stain is there :S . You can only notice it on a black background, others colors works fine.

So i was wondering if it this could be fixed. I searched on internet if it was a dead/stuck pixel, do you think it could be fixed with one of those fixing apps? (I tried it for around a hour, but so far no good) What options do I have? I talked with Amazon and they said that they will refund/exchange my phone but I would like to avoid sending it back if it can be fixed.

Thanks in advance :)

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