As correctly said by Dr Ashwin it might not necessarily be Carpal Tunnel Syndrome. There are other structures which may be affected and widely we have also seen people with neck or arm pain presenting with similar complaints expecially when there is nerve sensitivity developed.
Next Steps
See an orthopedist or Musculoskeletal Physiotherapist to get it examined
Health Tips
Avoid using the affected hand for a sustained period of time. Respect the pain and go easy before you let it become worse.