Get insurance as soon as possible. Do you know where the cyst is located? Could we get some more information?

I had similar symptoms in the weeks leading up to my first of 5 brain surgeries. The headaches got worse until one day I had trouble walking to my car. When I went to the hospital, they discovered a 12mm colloid cyst in my third ventricle that was obstructing CSF drainage. The hydrocephalus was so severe at that point that the shunt my surgeon placed registered an intracranial pressure of 60 mmHg. I nearly died.

Don't freak out, but do take this seriously. I was reckless, in retrospect.