My 56 year-old-husband recently suffered from the flu (fever, achiness, chest congestion, coughing, loss of appetite, runny nose, etc) for over a week. He has suffered from asthma all his life so it hits him harder and takes him much longer to recover. He started with the flu over 3 weeks ago and still has a constant cough, is very fatigued and now his jaw hurts. What do you think it could be? Thanks