What Causes Ringing Sound In The Ear And Heaviness In The Head?

Hi, I am 27 years old male. I work as computer network engineer, my problem is that I feel heaviness on my back of the head, which results in faint feeling though I don t get faint its just a feeling of getting faint and whistling sounds in my ears, my MRI reports are normal, nothing was found in MRI and screening, Neuro says that I am suffering from anxiety, though he gave me some medicines, but still i feel the same. Well I don t think that I am suffering from anxiety because i don t think much, my office timings are 7am to 4 pm and after that at 5pm I go to gym, so I don t have time to think about anything which can cause anxiety, I have also consulted a cardiologist to diagnose any heart related problem but again everything is clear (ECG, TMT, ECHO). Now I am consulting an ENT and he say there may be a fluid imbalance in ears and nasal congestion, he gave some medicines like Diligan 25 and Nuhenz. but I am still feeling whistling sound in my ears. I don t know what to do now, I am not 100% fit, Kindly help me in this.