Unknown icon in status bar?

[AC Question]

Unknown icon in status bar

Unknown icon in status bar.
(sorry, I don't see how to add a screenshot)
It's a circle with 2 dashes in it in the top left corner (not on the right!)
Running Marshmallow on a Nexus 5 with Nova Prime.

I assume it's from a fairly recent app download but I can't figure out which one and I have lots, do not want to delete them all trying to find out....

 

[QuasiHobo]

I think it is the "disable notifications" / do not disturb me icon.. Im having problems with it as well, turning it on without knowing how/when it happened You can disable the function in the top status bar

 

[Laura Knotek]

Re: Unknown icon in status bar

Is it what you see on my screenshot here?

That's do not disturb.