Was this empathic? Was this made up?

I woke up this morning at 4am and couldn't go back to sleep, so I started reading up on different types of connections that people have. Soul mates, karmic, twin flame etc. Reading through this stuff triggered a memory of something that happened a few weeks ago. So I had to ask reddit and am interested to see what peoples thoughts are. Feel free to add your thoughts. 

"This is was a really bizarre experience and am trying to figure out what it was. My Ex and I have recently broken up. We had very deep connection with each other, and still do(she is an empath and I have empathic traits.)

A few weeks ago (before I knew she was seeing someone) I was sitting in my chair in the living room and I had this really quick image in my head. It was my Ex’s body from the shoulders up and The face she was making was the same face she would make when we were making love, this was followed by me having this incredible surge/ gasp (almost like when you wake up abruptly from a nightmare.) However, I wasn’t asleep. it was a few weeks later that I found out that she started seeing a guy around this time that she has a history with. this has lead me to start doing some research, but am still questioning what was going on, I’m interested on your take.

what was this experience? is she still connected to me and I was picking up her having sex with her new partner? was she thinking of me while having sex with her new partner? am I just crazy? Did my brain just make this up? day dreaming?"

 Certainly a weird experience. and it left me with more questions than anything. Not something I'm dwelling on or mulling over, just, weird. This was my second experience like this with in the last few months. The other was about a month and a half ago, this was more of a very panicky feeling with a heavy emphasis that something was wrong. That one was an empathic attack. 

**update** A few redditors seem to think that it is or was known as a waking premonition, something I have never heard of before. I've heard of someone having premonitions, but never heard the reference to waking. Pretty interesting read. 

Waking Premonitions