If you bumped into someone or something accidently, then you should be aware at anything you do.
Dream dictionary: Bumping dream meanings
…(Butting | Thrusting) A bullfight or a goat fight with horns in a dream means preparing for war. It also could mean joining a festival, a show of innovation, or participating in heedless activities. Thrustingor bumping someone with the head in a dream means plagues, illness or calamities that will affect both parties. If blood flows from their heads because of such blows in the dream, it means that they will both suffer evil consequences and losses. Thrusting against someone with the head during a fight in a dream also means having pride about one’s ancestry….