hello, congratulations on your first lucid!
I don't want too keep you down, but..
when you woke up, why you have the doubt of not knowing if you were lucid?
I mean...
to explain it in a better way.
when you were in the dream, you felt that it was you?

when you are in waking life, you can be sure you are conscious because you feel this conscious...
when you are dreaming and non-lucid, when you wake up, you understand that you were not conscious....
the point is, when you wake up, you still felt the same way? I mean, it was the concious YOU in the dream? or not?

basically, what happened to me, is that, I'm in the dream, for some reason I know I'm dreaming, but my ME CONSCIOUS doesn't arise, and it's horrible you know, because when you are in the dream you think it's all perfect, but when you wake up, you understand that it wasn't YOU, you weren't conscious...
I don't want to make bad to you, just helping to be 100% sure about what happened.

bye

PD: for example, when you are in the dream, and you are LUCID, if you are in your dream house, you can recognize all the mess ups and differences...