we've all experienced nightmares. usually they'll eventually stop on their own. i have a question though: you said you've been reading these tutorials and forums, correct? have you come across any "lucid enhancers" like the B6 vitamin or anything to that degree? because if you have and your using it, that may be the reason for your nightmares.

i think the reason you had these two LDs in the last five days is, im guessing, because you been on this site for long periods per day, and you are constant thinking about LDing, and reading things about LDing. this alone can be enough to spark a LD (or so i've read).

btw. welcome to the forums. feel welcome to PM for any other help you may need.