Mine is black! I do need to see the doctor about it and keep meaning to make an appointment, but always put it off. I always thought it was a fungal infection, but my mil said it could be a blood blister spreading. Although I don't remember banging it enough to create a blood blister.
So is it a fungal infection that's got worse over time? I am the sort of erosion who covers it up nd it will go away :/.
Not this time :(