Can anyone identify this mark on my finger?

Gabri

So when I was in Mexico I thought I got what was a mosquito bite on my finger, it was itchy, scabbed over, seemed to heal fast (the scab) then I was left with this weird mark and I keep forgetting it's there until someone point it out or I see it in the mirror. It has been that way for a month. What could this be? Don't want to pay to go to the doctor if it's nothing. You know?