This has happened to me 3 times so far. Some time during the night I'll suddenly realize I'm laying on my stomach in full SP (always the same exact position, all 6 times), I feel like I get really heavy and I'll start having auditory hallucinations. The first night I thought it was just really heavy footsteps of some monster, but last night it happened and I realized what it was and said "ok, this is that "train" sound people talk about, I'm supposed to hear this". I lay completely still and stayed calm and the sound went away. I didn't do an RC at this point (this is the first time I heard the sound). I thought I should just stay completely still but after a few seconds I heard the sound again and something burst through my door and had this like.. rabid wolf sniffing sound like it was about to eat me and I could feel it on my bed (so obviously I was completely dreaming). Then I waited a few seconds after it stopped but I must've woken up because I did a nose pinch RC and I was awake. I think I might have fallen asleep the first time I heard the sounds but I didn't RC.

So should I be trying the RC the first time I hear the sounds? I don't want to ruin a good WILD because this seems like the only way I've ever gotten to a point where I have hallucinations (I can't do it if I purposely try to WILD, this way I just stumble into one). How should I check that I'm dreaming without moving on accident in real life?

Also, I know this sounds crazy, but I think I'm actually dreaming that I'm doing WILDs and then just waking up. Sorry if this is so long-winded ... I guess my question is really just : What kind of RCs should I try doing that won't mess me up to know when it's safe to start moving?