I would heartily second everything Wayne wrote--and I'm an older guy, so most of what he said applies to me! Depending on your age and activity level, sore joints could be nothing at all, or "something". The "somethingness" of symptoms like sore joints depends a lot on how long the pain lasts, what else goes along with it (joint swelling, redness; rash; etc), and the distribution of the joints (all, large, small), and so forth. Viral syndromes progress to the "oh, I've got a virus" realization, which you more or less have mentioned (fever, congestion, cough, or more GI stuff like nausea, diarrhea). Hope and pray you feel better!