Hi, I Have Had Symptoms Of Nausuea, Slight Body Aches,

Hi, I have had symptoms of nausuea, slight body aches, chills for over a week now. I don't have diarrhea or vomiting and have not ever since I have felt like this. Also, I feel hungry & eat but then feel very tired after. I don't know what this is. Can you tell me what I should do?