"I have a cough, especially when I go to sleep, and I wheeze. I wonder what's wrong with me. I don't have any pain except for a little mucus when I cough."

Based on the symptoms described, it is unlikely that you have bronchitis. Bronchitis usually presents with fever, greenish secretions, and persistent symptoms for more than 10-14 days. Since your secretions are clear, it is more likely to be a common cold or a viral infection. If your condition is improving overall, that is a good sign. Your cough may continue for several days or even weeks, as it is a natural reflex of the body. It is important to stay hydrated to keep secretions as liquid as possible.