After cleaning up I went to bed bottomless. At 3a I woke up and was wet between my legs right at my groin. Figured I didn't clean up all the way and wiped it up. Staying bottomless I went back to bed. 6a I wake up again and wet between my legs again. This time I tried to smell it, but it didn't smell like anything. Cleaned up again and went to bed, and there was a small wet spot where I had been laying.
So far I'm staying dry, but I keep wondering was it fluid or sweat? I've slept dozens of times bottomless after intercourse and never wet :/