| You should see your doctor and if he cannot find the problem the doctor should send you to a specialist. When you have allergies and congestion you can get headaches/neck aches from them, I get that all of the time. They can affect your whole body, making you tired, and sick to your stomach. I feel the way you do when I have allergies, however, I am not a doctor. When you feel run down like you have been hit by a truck that can denote an infection or virus- maybe you have a sinus infection? You should be concerned if your doctor cannot give you relief or find the problem, he should run blood tests. | 
Linear Mode
