Waiting for and willing a WILD to happen is sometimes like a small child trying to go to sleep the night before Christmas. If you are too excited, it's like you doom it not to happen. If there is one definate flay in what you did, that would be it.
However, I wouldn't worry about it. You are definately on the right track. What you experienced are many many different sensations that occur during the hypnagogic stage. There are a lifetime's worth of things that happen during this stage, and they are all weird and powerful, like this. Some of them can be uncomfortable at times, but that's merely because they are so powerful. WILD is the hardest method to use, and I've only accomplished it a handful of times in the last eleven years. My favorite is a VILD, because you never lose consciousness, or awareness. One second you are in your room, the next you are somewhere else entirely, and your brain is still entirely awake.
Anyway, good job on your first attempt. Is this your first attempt at LD, or just WILD?
At any rate, you did fine, but don't try to make it happen quite so hard. Have you ever tried to MAKE yourself fall asleep? Doesn't work.

-sloth