I had some episodes of pressure behind my eyes, sudden tiredness followed by eye twitching and twitching on right side of face?

i am a 49 year old non smoker, thin woman. Recently, I had some episodes of pressure behind my eyes, sudden tiredness followed by eye twitching and twitching on right side of face, This would instantly lead to nausea and feeling the urge to throw up. The symptoms disappeared, but I went on for an MRI w/o contrast. I thought I was just really stressed from work. The MRI results came back today as the following: There is biparietal atrophy and microvascular changes advances for patients age. Other differential considerations could include demyelinating type process, vasculitis or lyme disease.
I had blood work today. I just need some thoughts please. I am lined up for MRI w/ contrast and a neurologist visit. Please help. The internet is terrifying.

Age:
Female
Medications: klonopin fioricet
Yes
General Information: I am an (—). The doctor is ordering the test, but won’t say much

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