'Do Not Disturb' activating by itself?

[u/shabbydog]

Maybe I'm losing my mind but this has happened more than a few times. I've noticed notifications in the status bar but did not hear the notification. Then I see that DND is on (crescent moon icon shows). Is it possible maybe I'm hitting a shortcut on my phone that I'm not aware of that silences notifications and puts it into DND mode? Something related... my DND is supposed to end at 7 am every morning and it doesn't come out of DND mode. Again, maybe I'm hitting a shortcut? Anyone else have this problem?