Can't Put My Finger On It

So, as I post this, I am on my way into work for the night. All throughout the day, I have this sense of foreboding that started weak, but has been growing as the hours past. A dread that I can't put my finger on the reason why. 

It's quite possible that it's just fatigue throwing off the rest of my biochemistry. There aren't any external clues to set off this trigger-at least none that spring to mind. 

I'm posting this in the event that it's more than just a feeling. And, even if it does turn out to be nothing, I did listen to my intuition and posted this. 

On that note, I'll be heading in to work in a few minutes. I hope everyone has a good night.