I am 28, very active and live a healthy lifestyle. I workout daily, I don't smoke and drink socially. I began to get a sore throat 5 weeks ago which was very mild. I then began to get a dull ache in my stomach for 30 mins, once a day for 2 weeks which has totally gone now. After 5 weeks however, I still seem to be having throat problems and with the feeling of something in my throat, this is accompanied by a very mild cough which produces some yellow phlegm occasionally. My energy feels normal and I am doing hard workouts still. I am worried that the symptom doesn't seem to go away.