Bug bite on forearm. Had red swollen area with a white head that oozed puss. had one red streak up my arm from the bite area approx 6 long. Saw a doc who put me on antibiotics and gave me a shot of something in my butt. The swelling has gone done, but the head of the bite is raised and looks like a hard blister. No more redness going up the arm. I don t know what got me. I live in Northern Michigan and am in the woods a lot , but I first noticed bite in the morning after waking up.