I stepped on a piece of glass one week ago but was able to take the piece out as it was not lodged into my foot very deep. What was left was a small shallow cut which I then cleaned and bandaged (however within a few hours of that I went surfing in salt water where the bandage came off). The cut had not bothered me at all and was healing until today. Now I can no longer put pressure on the area where the cut used to be and the area is slightly protruding outwards, and is a white(ish) circle with a red(ish) dot in the centre. I can't put and pressure on the area as it causes a great amount of pain. What do you think it is / what should I do?Thanks