I just received a report from psych testing that indicates MCI along with panic disorder & PTSD. My psychologist explained to me that The 2 psych disorders contribute to our are the cause of the MCI. She also indicates that it should improve vastly over time as I work through my issues in therapy. Like you, I have memory issues and will even forget what people are talking about while we're in the middle of a conversation!
It sounds like whoever did your testing was not very positive when they gave you the outcome. It also sounds like your neurologist might not be an expert in psych testing.
Glad you are getting through school!