I agree, you need to see a doctor soon. It sounds as if you have an infection and if it is not cleared, it can go into your blood stream. This happened to my son. He just got a splinter in the bottom of his foot. He went to the ER and got it removed. About a week later, his foot started swelling and became painful. He had a red line going up his leg from the infection. Keflex cleared it up in 3 days.