Dizziness lightheadedness faintness pulsating head pressure ringing ears for 5 months. Symptoms come n go no triggers. Ct scan w out contrast clear.

Consider MRI, Neuro. Please see your health care provider, consider neurologist and/or ENT consult. An MRI of the head with contrast would also be helpful.
Wrong test. For these symptoms you need a neurologist evaluation, and likely an MRI will be ordered. A ct of the brain, even with contrast, is not adequate. Start with the neurologist.