I had three lucid dreams as well. Congratulations on your 3rd!
Anyways, in the small amount of lucids that I have had, I was never afraid of it, probably because they weren't in a dark setting... But I suggest that you try calming yourself down when you first realize you're dreaming, and you remind yourself that nothing AT ALL can hurt you. Shout "clarity now!" or "brightness now!" if you have a dark setting again to try and make it a bit lighter. If that doesn't work you could test your dream control and imagine a flashlight or something to appear. Just know that this is not a scary experience, it's a fun and exciting one! Be positive and put a smile on your face. Sorry if this doesn't help.