I have a friend who was recently diagnosed with mild cognitive impairment. Her memory has been getting steadily worse for a couple of years and she was very aware of it.

I was also concerned about my memory a couple of years ago, so I went for cognitive testing with a neurologist. The testing was intense, It showed that my memory was normal for my age and education, but that I had impairment on a couple of other measures of cognitive function which is what I was experiencing. I found the testing helpful in that it gave me a baseline.