About 1 month ago I had small injury on left foot near ankle. I applied cotton bandage to it, because of rain it was worsened. I visited doctor he gave me Supirocin-B. I applied it for 10 days, after 5 days suddenly my both ankles had swelling. In 2 days it was normal. Again both knees and shoulder was paining (knees had swelling). Blood reports were done everything was normal except c-reactive protein which is increases to 26. I am 29 years old. Is it due to injury or any other reason.