I have been having headaches for about 4-5 days, sometimes I feel like too much pressure in the frontal head and eyes, I do not have caught or running nose or even fever. Although I don't feel very hungry or don't feel like eating as much as I normally do. I do feel chills at times. I met a doctor and blood tests were done but everything seemed to be normal. Recently I noticed red rashes on my chest like it was bitten by some insect. 3-4 months back I had sinus but with treatment that was fine.