Read the following context and answer the question.
Context: While rushing to answer the door yesterday , I slammed my noggin into the edge of a bookcase . It sounded like a gunshot to me , and V said it was pretty loud from the other room . There was n't much bleeding , and there 's only been a little swelling .
Question: What injury is the narrator likely to suffer in lieu of these events ?
Answer:


They are likely to have a head injury .