I fell over a few days ago and had a cut the size of penny on the top of my foot near my ankle, I put a plaster on it so no bacteria got into it while i was out. I took it off when i got home so it could breathe. It started to scab the next day but I went to a water park later on that day and so that got rid of the scab . Today I looked at it and the new-scab looks yellowish and it s oozing orange pus. There s a half centimetre light pink ring around it but I m not sure if it s scarred skin or something else. Is it infected and do I need to go to the doctors?