I have a weird blemish on my face and I don't know what it is?!

There is a spot on my upper lip by my dimple and it is just a spot that is slightly darker than my skin tone!. At first i thought it was dirt but it wont wash off!. Then I thought that it was a bruise but it doesn't hurt and it would of gone away!. I've had it for about a week and it has started to go away a little bit but not all the way!. It is barely noticeable up close but you can see it from normal distance!. Please don't say " Go see a doctor " because if it doesn't go away in a little while I probably will see my doctor!. No I have not used any different face wash or soap!. And it's not dry or itchy it's just a spot that is slightly darker than my normal skin tone!.Www@Answer-Health@Com

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