Is this an early sign of brain disorder: Misremembering ATM code?

I know that this is a common question….. but I’m only in my early 30s. I’m a busy career person, with many friends. I’m normal.

Today the 4-digit ATM code I had been using for the past 5 years were suddenly mis-remembered (or mis-recalled?). Same code for all 5 banks and credit cards of them. I checked; it was my own error. I couldn’t believe it.

Last week everything was just fine, but today—I punched in the SAME number, only to find out I was wrong. It felt impossible; it was really this number. As if TODAY someone hacked into my brain and replaced an old ATM code with a new one.

Not sure if you can call it “memory lapse” because I didn’t “blank out” or anything like the Alzheimer’s.. If so, would anyone kindly point out what it is that I am having? This event shocked me greatly. Thanks so much!