I don't know what to do. Over the past hour I have started to feel unwell. I have a temperature and feel nauseous. I am meant to be delivering training tomorrow to external staff who have paid to travel to us for the training. Catering all paid for. If I still feel like this I won't be able to drive. I definitely won't be able to deliver training. Do I call it now and cancel? I feel horrible about it. I am panicking!