Hello please i just hit my head and face with something and i haven't experienced any headache or dizziness only feeling fatigued and my head feels heavy , is this serious?

Question's vague but: A person should go to the ER or see her own doctor if she: vomits more than once, loses consciousness over 30 seconds, has a headache that is worsening, has changes in her behavior such as getting irritable, has changes in coordination such as clumsiness, is confused such as difficulty recognizing people or places, has changes in speech, or is just very worried about the situation.