I think I had a lucid dream, but...

So, I had no idea about the whole concept until a friend showed me this film 4 months ago. I was very impressed, and I really wanted to have this experience. I didn't do any of the recommended steps, but I had it in my mind all the time (couldn't help it!). So I started seeing changes since I saw the film, like I started remembering my dreams, while before it was rare. And then, a week ago I think I had a lucid dream. The dream started and, I don't know why, I had this notion from the beginning that "this is a dream". So I was very excited, I told myself "come on, do something crazy, you are finally lucid dreaming". There were people around me, so I tried to hit a woman, and then a man, and finally I ended up running wild and hitting people while screaming. I don't know why I chose to be violent, doesn't seem natural to me in real life. Anyway, at some point, I thought I should try this trick, to switch off the lights. And the lights were switched off. That thing raised a lot of doubts in my head about the dream. Could I have dreamed that I lucid dreamed?