While I am not disputing that what ShyGreenEyedGrl and crazy_grrluk have felt is sub drop.
But wouldn't those feelings be a natural occurence when having to be apart from your significant other?
I am curious to have someone explain it to me so I can understand that better.

I am somewhat confused about sub drop in general. I do get those low feelings maybe two or three days later.
I have been told that sub drop is not possible in an online environment so I chalk up those feelings to being ill prepared to maintain a proper mindset.

I love humiliation, but I also have a hard time grasping the notion that it isn't bad to be treated badly.
Seeing that to me humiliation is a big rush, and I enjoy it immensely, I would have to assume that my low points are my insecurites coming through.
I try to combat the negative through exercise, practicing music, eating right, and getting enough sleep. Not that I am successful at doing those things all of the time.

So I can't distinguish whether or not I am feeling sub drop or just some conflict within myself.