Symptoms of mild cubital or carpal tunnel syndrome when biking

Getting wrist discomfort, rarely hand numbness, and some elbow pain Should I cough up the $$$ for a bike fitter professional or should I just go to doctor. I’ll probably do both but wondering which I should attempt first Bike fitter: could help eliminate source of symptoms by getting my biking ergonomics perfect Doctor: could help treat symptoms. Could get proper diagnosis. Unlikely will help with anything beyond generic home treatment and prevention advice.