I was fine when I woke up today. Early afternoon I developed a fever (100 degrees), body aches, and chills. Took Tylenol and it helped for a little. The fever is now floating between 101 and 102. There are no other cold or flu-like symptoms. This is why I'm really concerned because nothing explains it. Should I go to the ER or just visit a doctor. Is this anything to worry about or am I simply overreacting?