Follow-up imaging of the cyst is often recommended,
specially in cases like yours, considering the presentation of your recent symptoms, even if pineal cysts generally do not cause such symptoms or complications.
The neurologist should be able to rule in or out further enlargement of your pineal cyst and diagnose the exact cause of you symptoms, which BTW may take some time.
While considering your options or waiting for an appointment, pay extra attention to lifestyle factors
such as sleep, nutrition, alcohol & caffeine consumption,
fitness, stress, etc. Optimizing your lifestyle can only help.
Best wishes,
Niko