ok so i was on page 12 yesterday afternoon for my main keyword, by evening time I was on page 9 for my main keyword. Today I am nowhere to be seen for my main keyword. I havnt done any link building yesterday. All my other keywords are ranking with one moving up a higher position. Should I be worried. Am I being penalised? I was thinking of updating some fresh content on the page I am targetting and make it more engaging whilst still keeping it optimized. Do you think this is just a google dance and it will come back?