Hi, I had swine flu, was off work for 4 weeks, back last week, Im very tired, still unable to go back exercising as I would be quite fit, I can go for a walk but nothing more yet. I developed sinusitis and was treated with antibiotics. I am still getting headaches, fatigue and the ringing in my ears has not subsided. I got a tonic and Im taking vitamin D. is there anything else I should do?