Hello: for the last 4 days I have experienced fever, congestion, gas, general malaise, and stiff/sore neck. Tr onslaught of the symptoms began with a very sore throat, but the level of severety of the throat pain has since subsided. Any clue as to what could possibly be going on? I have been taking sudafed (pseudo ephedrine) for the congestion and acetaminophen for the fever. However, overall I feel miserable and have not been able to nap or sleep for 3 days straight!