Okay so I woke up this morning and I had a wet spot on my underwear about the size of a bottlecap. I looked to see what it was and had maybe a half a marble of semen on the head of the penis. I noticed the spot on my underwear felt like half sticky and half like pee. Did I ejaculate in my sleep at all or was it just my bladder or something pressed when I moved and a bit of semen was in my bladder or something? I would think if I ejaculated in my sleep, it would be a much bigger mess right?
I've read that wet dreams don't produce a full orgasm/ejaculation like MO. That it is less volume and the semen is expelled with less force. If that's accurate, then yes, you probably had a nocturnal emission. Been a long time since I experienced one, so I won't commented on personal experience.
