Too Early for Diagnosis?

Hi ,

First post. Regular question I imagine. Suffering from tinnitus in left ear since May this year. Ranges in volume and even sound. Periodic fullness in ears. Regularly lightheaded and dizzy. In fact the lightheaded feeling has become worse. Given sertraline by doc. Then my consultant changed tablets to nortriptiline. No benefit. No on serc . The issue is that two ent s have not given diagnosis without me having a full vertigo attack. Though the dizzyness has severely impacted my life.