This is really cool! Have you ever seen the Twilight Zone episode "Mirror Image"? Your experience reminded me of it. To give a breif summary, it's about a woman who is sitting around at a bus station, waiting for her bus, and she starts seeing herself everywhere. She goes into the bathroom, looks in the mirror, and as the bathroom door is closing behind her, she sees herself sitting where she was just moments earlier. She goes to get her baggage, and the man at the desk says "I gave it to you ten minutes ago!" Her baggage was simultaneously behind the desk and by the bench she was sitting at. In the end she concludes that every person on earth has a twin from another reality that occasionally shows his/her face in our own.

I'm not sure what happened to you that night, but it definitely made me think of this! Personally, I don't necessarily think that there are thousands of "parallel universes" where we have clones of ourselves running amuck, but I think that every time we make a choice, or take action, in essence we create multiple "realities". These choices and actions don't have to be life changing or anything, but they just have to affect where we'd be and what we'd be doing. Think about this for a moment: You're drving to work. You usually take the highway, but today you decided to take the backroads. So you're finding your way around town, and have all these different choices of which way to turn, and what's there to see. Maybe you decide to skip work and just drive around all day. Or maybe you get lost, take a wrong turn and get into an accident. What if that accident breaks your legs? What if, by overcoming this tragedy, you become a beacon of hope to others in pain, and go on to become a motivational speaker? Just like that, a simple decision of which way you're taking to work created a whole bunch of different "realities"; some where you're just doing your job as normal, others where you're a public speaker. I know, it's a little out in left field, but thats the way I look at it.

Bringing all that to relevence, imagine if, for some reason, you got called into work the night before. Just as you walk in, you see Jessica, dressed in pink, cleaning the tables, and ask her if you need to make coffee. Although this never actually happened, it could have happened. Maybe you had a glimpse into this other "reality" of what could have been..even if you weren't aware of all the different possibilities. Crazy, I know, but anything is possibile, I suppose!!

TL;DR This reminds me of a Twilight Zone episode where a woman keeps seeing a mirror image of herself everywhere. She thinks that there are clones of each of us in parallel universes that sometimes show their faces in our own. Although I'm not sure about the whole "parallel universe" thing, I think that every choice we make can lead to a different "reality", and that perhaps, in situations like OP's, we can catch a glimpse of things that could have been reality if we had been in a different place at a different time.