You can start with hot fomentation at the site of pain, take analgesic with antiinflammatory medicine like Tab. Signoflam twice daily for 3 days. You can also apply local analgesic ointment at the site of pain fir 3-4 time daily.
Next Steps
If the pain persists, plan for some investigation like X ray or USG..
Health Tips
Avoid heavy work with that hand..