question: Hello. A horsefly bit me in the hand. It swelled up quite nicely, but over last nights dinner, it faded away. This morning, I woke up feeling slightly nauseated, and had a stiff arm. The swelling was back, and much redder than before, and I have a serious sensitivity to touch under my armpit. It seems to help if I hold my arm up. How urgently would I need to see a physician in your opinion? I dont have temperature, and took 1 antihistamine that I have for my hayfever. Thanks a lot!