I Just Returned From A Cruise And I Got A

I just returned from a cruise and I got a couple of blisters from all the walking, they seem healed but yesterday I got a lot of pain on the top of my right foot and no I have a lot of bright redness where the blisters were and there is also some bruised looking spots by one of the areas. My foot is very swollen and I am getting more discoloration in the big toe and the next one.