Should I be worried?

Fellow over 60s, I’m 61 and 3 times in the last month I woke up from very vivid dreams not knowing where I was, before opening my eyes and seeing/understanding that I was in my bedroom in my current house. But just lying in bed waking up without opening my eyes I felt completely disoriented about whether I was waking up somewhere in my dream or someplace else. I moved to a different country 4 years ago, so I don’t automatically default to thinking of my current home as “home”.

This has never happened to me before and of course I’m worried about dementia. Anyone have something similar or thoughts? Is this abnormal?