I don't know if it was, or if I'm even calling it the right thing - still new to all the terminology, so please correct me if I'm wrong.

Anyway! I woke in the night (a few nights ago now... I'm so slow posting this!) at about 4:15. (I'm diabetic, so I wake sometimes with a low blood sugar level and have to get up to have something to eat.) I went downstairs for some snacks to bring my sugar level back up and, when I lay back down, I sort of remembered about WILDing and thought it might be a good time to give it a try. (I don't know if it was, but it seemed like a good idea at the time!)
I was lying in bed, relaxing and counting and trying to imagine things and make tactile connections to the images. I was doing pretty well with that, and I think I was sort of in a dream but not quite - it felt real, but at the same time I kind of felt like I was still in bed. I didn't get any further though, because I heard two distinct screams, one after another; identical in pitch, volume and length. It freaked me out, and I woke up then (or came around properly... still not sure if I was asleep or not...)

Might I have been starting to do something in the general WILD direction?