Is it normal to have a feeling of coldness in the area treated after tumescent liposuction?

I had tumescent liposuction of my calves and ankles under local anesthesia this morning. My legs are still quite numb though i have pain and tightness in my calf muscles. I am still draining quite a bit. One thing that surprised me is that my legs feel very cold in the areas where fat was removed. What is the cause of the feeling? Is it normal?