Hello, I am new here and I haven't tried lucid dreaming yet, but I was wondering, is it possible to have a dream that is so horrifying and scary that it can leave marks on you?

I am easily scared and I get too excited/anxious at times, and well, I'm afraid

I was also wondering if your mood/thoughts before falling asleep can affect your dreams.

Thanks in advance.

(sorry for any grammar mistake in this post, English is not my first language)