I'm tired, like I have a fever, but I don't have a fever.

This symptom may be caused by cold, but it cannot be ruled out that it is caused by yin deficiency and internal heat. It is recommended to check the cause, rest more during this time, eat light and digestible food, and not stay up late for a long time. If it is caused by yin deficiency, it needs to be treated with drugs that nourish yin and kidney under the guidance of a doctor.