This may be due to calf muscle strain.. Are you also feeling weakness or having fever..
Next Steps
You can start with hot fomentation , take analgesic with muscle relaxant tablet, take levocarnitine,
calcium and
vitamin d supplement.. If you feel feverish, planbto get some investigations like CBC,
CRP..
Health Tips
Ankle movement exercises can be done.. Avoid heavy work, avoid standing and walking for long time.