question: this past week i have been feeling tired with no energy. I just quit smoking because i cough up a little bit of blood and it scared me. i havent had any appitite and feel like i have to clear my throat every five minutes but dont have a produtive cough.i just went to the emergency room and they checked my blood and did a chest xray and said every thing is normal and discharged me with viral syndrome...can u tell me whats wrong with me?