I was taking a short nap just before I posted this. In the dream, I was where I was napping. I was kinda on my bag and my legs seemed to be floating up by themselves sorta (of course I thought I was awake), so I decided to pinch my nose and do a breath test, as I've been trying to reinforce the habit. To my surprise, my nose worked fine, and I realized I was dreaming!
However, this is where I get unsure. After that, I stood up and immediately my vision went black. After that I thought I woke up, but I was just in another dream in the same place, except I think I'd lost my lucidity. Is it possible to deteriorate from a lucid dream into a different, regular dream? Or am I imagining something?