First Lucid... Something?

Hey guys,
After about two weeks of attempts, I finally had my first lucid experience.
I've got to say, the sudden realisation is amazing, I personally felt the realisation as an energy of some sort, like a wave over my body that turned my unconscious self into my dream body.

The events:
I am 100 percent sure I am asleep as I can't perceive any senses of my surroundings such as me lying down.
After doing SSILD the night before along with lots of other techniques I find myself randomly, in the middle of the night, I presume about 2, telling myself "I'm in a lucid dream".
Now, at that point I can't even remember being in any dreams before, it just popped out.
The sudden realisation came over me and I smiled in my dream body.
Now, this is the annoying part, everything stayed black and after about 5 seconds I either go back into a normal dream and forget it or carry on being lucid... and forget it, I don't remember anything after that.

What do you guys think I should do if this happens again?
I know I should RC but I forget, I guess a have to try and visualise myself in a dreamscape and hope I teleport there.

Thanks, all the info on this forum swell as mortal mist have helped me loads.

I think you'll be able to handle if better now the second time, since you know that the lucidity might slip away any second. May I ask what technique you used the night you succeeded? :)

I was using SSILD, and basically everything I thought of during the day was about lucid dreams. Aswell as doing 30+ rc a day thanks to changing my tablet wallpaper to the words "reality check"