T-wave abnormalities requires further evidence
and except for
hyperkalemia (electrolyte) the T-wave alone is not a diagnostic of any medical issues. Conditions to be considered with T-waves will usually be abnormal in ventricular hypertrophy, LBBB, chronic pericarditis, and in electrolyte abnormality.
Whether to see a cardiologist would depend on whether you have any supporting symptoms, health history, family history of cardiac disease, etc.