Re: psychologist testing
If you are seeing a NeuroPsychologist - they do alot more then looking for depression etc. Actually, they help determine subtle changes to the Neurologicial issues like dementia and other types of things. Not suggesting dementia - however with the brain fog - they probably want to ensure that something else is not at work.
I'd rather see a Neuropsychologist any day then a Neuro - they have an extra degree of training in the brain. You know how they say "its all in your head?" - well duh! - everything stems from the head.
Hope it went well.