If you're aware you're dreaming try some RCs to confirm it for yourself beyond all doubt. If you are completely aware then that pretty much defines lucidity. The reason you have strange dreams and don't realize that they are dreams is that the logic portion of your brain shuts down when you are sleeping making rational though impossible. If you are making a rational decision by coming to the conclusion that you are dreaming then the logic part of your brain is a awake and by all definitions YOU ARE HAVING A LUCID DREAM. If you are only partially aware that you are dreaming than its a semi-lucid dream and that happens to everyone. Happy dreaming!