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As an optometrist I can comment on the itchy eye component. The overall symptoms lead me to suspect a viral infection (flu or cold.) Itch of the eyes often manifests during a viral infection. There aren't any medications to kill the virus but some medications can help to make you feel better in the meantime. Over-the-counter, I would recommend ketotifen drops for the eyes (Zaditor or Alaway are name brands.) These drops can be used twice daily and will help with the eye irritation and itch. The overall sickness you're feeling could be best treated with OTC medications such as NyQuil. I wouldn't go in to the doctor unless/until you have symptoms of severe dehydration. Sounds just like flu-like symptoms for a few days and should get better on its own.