I don't usually look at pictures, because they are not great indicators of what's going on- but since you didn't give much description on what you were seeing, I did take a quick look. It looks like your foot is a bit swollen? Have you had a fever or is the area hot to the touch? If that is swelling, and you have had any drainage, the area is hot to the touch, you have had a fever, or the pain is getting worse and not better- you likely have an infection and should let a doctor take a look.
Other wise, keep the area clean and you can put antibiotic cream on it prior to placing a bandage over it.