I have been bitten by a marchfly4times. 1 is at my left wrist , i on my right upper arm and 1 bite on each foot . My left wrist is so bad, red, swollen, hot and the swellen redness goes up to my elbow .my right upper arm is also red, swollen and hot, and the shrobbing is getting worse. bot feet are not as bad. It happened yesterday morning, the redness, swollen and hot feeling started this afternoon. What can I do. I I just came back from a 4 day holliday.