I Have A Little Cut In The Fold Under The

I have a little cut in the fold under the bottom of my right baby toe. I didn't cut it on anything and it's really sore. Also, just between the same baby toe and toe next to it on the top of my right foot is a thin patch of a kind of scab-like stuff that doesn't hurt, isn't spreading but isn't going away. Is this athlete's foot? Please let me know what you think it might be and what I should do. I don't wear close-toed shoes almost ever and I've never had something like this before. I'm very puzzled! Thank you for your time! I really appreciate it!