Have a calf tear from a week ago. Using a KneeRover. Can't walk and calf is still incredibly tender. Swelling has mostly subsided. I noticed ankle is now swelling since I been on feet all day. No other addt'l symptoms. Go to doc or stay off feet?

Achilles tear? With a calf injury as you describe, worry about exact location. Higher up on leg suggests likely muscle injury and resulting hematoma. Mid-leg or distal pain in lower third of leg may suggest muscle-tendon or Achille's tendon injury that would warrant thorough evaluation by health care provider experienced in evaluating calf injuries.
Keep icing... Calf muscle tear is very painful and heals over 6-8 weeks. Initial pain and swelling can be relieved by Ice& cold compress and elevation. After few days hematoma ( blood from tear) can emerge to surface and create big bruise... swelling and bruise moves down by gravity to ankle.Its normal. Shoes with slightly elevated heal may feel better. Gradual gentle stretches after acute pain gone. . .