For a dream to be officially "lucid" you have to be aware that you're dreaming. However, it's good that you're noticing that these dreams can be a result of what's happened during the day.

Keep working on your recall and I would advise looking through them after you have several written down and see if there's a pattern of things that appear on a regular basis in your dreams (dream signs). Then, try to keep track and see if those things happen during the day and when they do ask yourself if you're dreaming. If you can get in that habit when you're awake it should carry over to when you're asleep and you will be more apt to realize that you're dreaming.

I'd also take a look at the tutorials we have here and see if you want to try working with one of those.

-Amé