I started taking Cipro for kidney infection 24hrs ago. I keep experiencing extreme chills but no fever. Is this normal?

Sort of the same. Chills and fever are sort of the same thing, during an infection. Chills happen when one's body is trying to generate more heat in order to raise the temperature. Fever is a raised temperature, of 100 degrees (F) or more. Thus, feeling chills during an infection means the body is still fighting the infection. One should be calling her doctor if chills don't go away soon, or if any symptoms worsen.