Thirteen...unlucky for some?

So...I was in school today, in the Prep class I have been in a few times."I was relieved when they told me it was you," said the teacher. " Originally they had someone else who didn't know the class and I was worried but then they told me they had changed it."" I was glad I was asked," I said."We have had a few off with various bugs," she said. In the end 13 turned up.She went off to do some P.D ( Personal Development) and I started the day.It was all going well but 45 minutes before Morning Tea I suddenly started to feel unwell. Waves of dizziness and nausea washed over me and it was all I could do not to dash out of the room and throw up. I made it to Morning Tea and sent them all out and stood in the fresh air for a while but it didn't make me feel any better.In the end I went to the office and saw the Business Services Manager and told her I was feeling unwell." Go home to bed. It sounds like the bug. We had teachers last week fine first thing in the morning and then I'll by lunchtime. Go home!"I apologised for letting them down and came home and went straight to bed.I hate feeling dizzy but I was OK lying on my left side. I got up about tea time felling a bit better and had something to eat but 10 minutes later  it all came back so I got back in bed.Fingers crossed...it is just after midnight...I am feeling a bit better and can lie on my right side now without the room spinning. Hopefully I will be back to normal by morning.