Can you have the flu without having all the symptoms?

My whole body hurts and is cold, my throat is sore, I feel nauseous but haven't vomited (not sure if the nausea has something to do with me not eating today but I had no appetite to eat) and I am so freaking tried and sleepy. The only symptom I don't seem to have is a fever, runny nose and sneezing. Could this still be the flu or is it just a cold/bug?
Can you have the flu without having all the symptoms?
Post Opinion