u/Due-Spare7871

So I’ve had this half black on my feet 🦶 for about 6 months now? At first I thought it was just injured as I play padel (racket sport, with a lot of sprints and feet “stress”) but this is not disappearing, I play around 3 times a week, but this should be gone if it was just a hit on my nail? Can this be a fungus ? Should I see a doctor ? Sorry for my English.