question: 37, 6ft, 84kgs, family history of hypertension.I had a very bad sore throat and cold last week. I ignored it, and it became worse. Now, I have a mild chest infection, and have bloody sputum sometimes. I am on antibiotics, and chest x-ray is normal. Doctor says this is usual during cases of acute bronchitis, and rest and antibiotics should clear it up. I am very scared, please help me.