Have you ever done something and then immediately forgotten.

I got off bus 11.20am, walked into work space 11.21am and then spoken with a colleague 11.22am then between this time and 11.24am I had seemingly sent a Microsoft Teams message to a colleague and have no recollection of it. I noticed this at 11.25am and the time stamp said a minute earlier and I honestly do not remember sending it.

I worry about memory loss and dementia and brain tumor. I remember the rest of the day perfectly.