anxiety realted spacing

so i have always been a bit of a day dreamer and have moments where i will just space out. usually its only for a few seconds to a minute or two then i come back to reality. a few weeks ago at work though i had a moment where my spacing off could have caused me to lose my job. in the bottom of a customers cart was a thing of water i guess i forgot to scan so they walked out with it and got it for free. i wasn't having the greatest day that day to start I'd been feeling anxious all day. so i was wondering if anyone has had spacey moments like this caused by anxiety?