Are you being serious?. If your doctor put it down to hayfever, then you clearly aren't showing symptoms of flu. If you had flu, you would know about it. Since you've been posting fine and regularly over the past several days, I doubt it is flu.
When I had flu, it was literally the worst illness I've ever had. I couldn't get out of bed for like 3 days, not even to watch TV or go on the computer.
"A typical flu begins with a headache, chills and cough, and rapidly develops into fever, loss of appetite, muscle aches and fatigue, runny nose, sneezing, watery eyes and throat irritation. Nausea, vomiting and diarrhea may also occur, especially in children."
"When you have a common cold you generally have a runny nose, sneezing, nasal congestion and throat irritation. Fever is uncommon and you will improve in 2-3 days.
The flu is miserable to have. If you have the flu, usually you will have a high fever that lasts for 3-4 days, a headache and muscle aches, extreme fatigue that may last 2-3 weeks, and a bad cough."

