Whispers?

I just closed something out that I think I shoudln't have. It said I had a new whisper or something? Ugh. Anybody know about this? I've checked my inbox but it's not there and just want to make sure whoever was trying to contact me, that I get their message. I know it was on FORT because it came out right as I closed that tab, but I was thinking it was for something else (like an AD somewher or I don't lol, it was an accident).