Flashing Lights

Hi people!
First I'd like to introduce myself. I've read about LDs a little more than 2 years ago (I was 16 then). I was very interested in it, but also reluctant (there is always a lot of crap in the internet :roll:). Anyways, I did a little research and figured out that there is more to LD than just the bull**** ideas of exoteric freaks. So I started reading tutorials and tried WILDing a few times, but I couldn't even reach SP and gave up after a week or two. However, since then I've paid more attention to my dreams and finally I've decided to give it another try since my summerbreak has started and I can spent a lot of time on it. So I went out, bought a nice notebook for my dreamjournal and started writing them down.
That's about all I think; if you have any questions, feel free to ask! :banana:

Ok, now the flashing lights: I worked out and went jogging this morning, so I decided to take a nap in the afternoon (often I have semi-lucid daydreams when I take a nap, so I wanted to try WILDing). I laid down, relaxed and followed all the WILDing instructions. Unfortunately my stupid dog started barking when the postman came and kinda ruined it, but then I went back and felt more and more sleepy (my throat went so dry, it felt like a desert; any tips on how to avoid this?). Then suddenly, a light started flashing really fast in front of my eyes and I remembered that this had happened before when I tried to WILD, but it had always scared me and I opened my eyes. This time, however, I forced myself not to open them. I'm not sure how long the flashing persisted, but I guess it was less than a minute. Then it slowed down and I realized that the flashing were my eyelids which opened and closed really fast while squinting and the slowing down was caused by my eyes being fully open. :eek:

Any idea what has happened? I haven't read anything about this and wondered if I'm the first one with this phenomenon.