Information on condition

I have been diagnosed with cerebrovascular disease  (small vessel disease) and subjective memory impairment although over the past 12 months I think I and other people say that I am more withdrawn or not listening and forgetting things  spoke to my GP who sent me for counselling.  I have done some research to see if I am 100% dealing with depression and anxiety. So I put in the diagnosed conditions and other symptoms which i have...slowness of thought. Problems with concentration. Difficulty finding the right words.depression, mood swings and lack of interest or enthusiasm memory impairment so spoke to GP asked if the depression wasn't a symptom of something else he says not the case i always have to write everything down or I forget not that i am a doctor but I beg to differ. Everything points to Vascular dementia spoke to others in family and they dissmis i am looking for some advice or am going mad thanks