Lapse of Consciousness

This afternoon I took nap and attempted to WILD. When I had gotten pretty far into SP, I fell asleep... or so I thought. I woke up what felt like an hour later, but I was still in SP, at the same stage as before. Was this just a lapse in consciousness? Does this mean that I was close to LDing?
I get stuck at this stage alot. I feel like I'm really, really close to LDing during a WILD, but I can't get past that boundary. Anyway, whenever I start to feel the SP in my head, I feel like I must be very close, and this afternoon my lip was paralysed, at least.
Any tips?