I am just at the end of my second cold since April. Each has lasted about a week with similar symptoms. Sneezing, tired, coughing without respiratory tightness but a tickle at the back of my throat. My breathing is normal but constant blowing my nose. Recently had my annual checkup with blood work and everything was really good. Around here everyone is complaining about pollen but I have no history of those kinds of allergies. I have no idea why this has happened.