By Scott Rutt A look at previous declines for the Dow shows today’s losses are barely a blip on the radar, says Jim Cramer. There are three big worries in the stock market, Jim Cramer told his Mad Money viewers Tuesday, but we’ve been worrying about them for months now. Instead of worrying, he said, maybe it’s time to be prepared for when something goes right. For weeks now, all we’ve heard about is the possibility of Federal Reserve induced recession, Covid lockdowns in China, and Russia taking huge losses in Ukraine. None of these three worries show signs of changing course anytime soon. Tha…