I would also suggest your primary care physician first. They can direct you to the next step and give you any referral you might need to get there. Orthopedics is probably the next step, but possibly physical/occupational therapy, or a neurologist (to determine the extent of nerve damage, probably?)

I went through the process (in the US) for a repetitive stress injury that acted a lot like carpal tunnel issues. You might be able to just talk to your PCP (via messaging, email, tele-health appointment, etc) and get a referral to orthopedics; depending on your healthcare system / insurance situation, maybe you don’t need a referral.

IANAD/YMMV