Some may assume that fleas and bed bugs are the same because of the way that they look. You should realize that they are different from each other. Bed bugs will usually be found in between your sheets. They would need to crawl under your bed so that they can feed on you. Fleas would usually look for a warm-blooded host which can be an animal or a human being.
Take note that fleas usually jump around which can make it harder for them to be removed from the body of the host. The way that they look can also be a bit different. Bed bugs will tend to be rounder and smaller as compared to the flea.