If you had to stop and fill up over the last twenty four hours you definitely noticed a spike in prices at the pump. The cost of a gallon of gasoline increased by almost thirty cents overnight. Experts say the continued unrest in the Middle East is causing the price of crude oil to rise which eventually hits your wallet at the pump here at home. John Felmy, chief economist at the American Petroleum Institute predicts gas prices to be between three dollars fifty cents and three seventy five by Memorial Day weekend.