^^ Here's a thought.

There is a chance that you're thinking about your body being asleep because you're "scheduled" to wake up shortly, and your dreaming mind is giving you a little kick to remind you that you'll be awake in a minute.

Maybe next time this thought appears you could remember that yeah, your sleeping body is out there, and calmly accept this fact and push on with your dream. You might even take a moment to carefully consider your dream surroundings so that you can more easily bring them with you on the DEILD NyxCC rightly suggests you attempt upon waking.

LD's often happen during the moments that just precede waking, so it might be very difficult to avoid waking up. With time and experience, though, you'll likely be getting lucid earlier, and finding yourself with more time to dream.