I Have Had A Throat Virus For Five Days Now.

I have had a throat virus for five days now. Went to doctor on Monday and she determined it is not strep and I have been dealing with the symptoms. Everyday I think I will be better and by mid morning I have zero energy, or nausea, or low grade fever. Is this something that typically lasts this long? I am a 69 year old very active woman and am ready to get back to exercise and life.
Thanks