I am experiencing left ankle/ foot swelling. I got blood work done and urine testing and they came out fine. It worsens as the day goes by. No pain?

Venous insufficiency. You could have a problem with the veins in your ankles causing the swelling. I assume there is minimal or no swelling in the AM. You should consult your physician to determine the type of swelling (ie. pitting vs non-pitting or water retention vs not water retention).