It could've been that, or it could've been that your lucid occurred too early in your sleep period. What time did you go to bed? Your REM cycles (when you primarily dream) get longer as the night goes on, allowing you to have the longest dreams (including lucid dreams) later in sleep (i.e. in the last 2-3 hours).

Congrats on your second lucid! Even when it's short, it gets easier the more often you're successful.