Sadness after a wet dream

So oddly enough, instead of feeling horny or some sort of chaser effect, I feel quite down since last night's nocturnal emission. I think a good chunk of it has something to do with the fact that it wasn't a very good dream. I wasn't partaking in a good, positive and healthy first person sexual encounter in the dream. Instead, it was a third person view, where I was watching some sort of compilation video containing a fetish I am currently ridding my brain of. Without choice, I woke up with the realization that I had a wet dream to those images. I feel bummed and actually very down becuase of it. And I do not mean like disappointed in myself, but more so like an actual chemical induced sadness.
It's very interesting. Hopefully I will snap out of it in a few days. As usual, share with me your thoughts.