It is very important to know what to do when a bee stings. First of all, you should remove the stinger as soon as possible, sideways, without squeezing the reservoir which is at the end of the stinger. Instinctively, people pull the stinger with their fingers and that way enhance the injection of venom. When a bee stings, it injects about 20% of venom, and the remaining 80% is released in the next 15 minutes. This is why the way you remove the stinger is very important. After it has been removed, you should put something cold on the place where it stung (a rock, ice). If it swells, it does not mean a life threatening allergic reaction has occured. However, if the swelling keeps growing within the next few hours, you should seek medical attention. If a bee has stung you in the head, and you do not have any experience with bee stings, you should see a doctor. It is very dangerous if a bee is swallowed. In this case it can sting you in the mouth and cause a swelling that can potentially cause suffocation.