I returned back to the US on Thursday from a 12 day visit to Costa Rica. The bottom halves of my legs have been sore from sunburn since wed., today I noticed my ankles are extremely swollen and the bottom halves of my legs are very tight, as if fluid is in them. I did get bit on the top 1/2 of my leg by something on the 3rd day there and still have a bubble mark there from it. I received 2 other painful bites in my ankles while in the forest, by some type of black fly looking thing. Will this swelling go down on its own or should I go to the dr? No other symptoms. Thanks!