Do I have the flu or is it allergies?

I'm going to just list out my symptoms, and hope that it is distinguishable illness. It was not progressive at all. It built up all in a few hours, though I have noticed it's gotten a little bit worse over the week. I have a very dry cough and a sore throat. I only have a stuffy nose in the morning, though it really gets in the way. I don't know if this next one is a personal issue or part of a sickness; I have sore joints and physical pain around my body. It never happened before I was sick, so this leads me to believe that it is a symptom. When I stretch, my joints crack up. I also have major headaches that bother me from working, which also might be a different problem. When I cough a lot, I feel like throwing up. I get a lot of chills and I sweat even when it is cold. I haven't checked my fever, as I don't have a thermometer.