MissChiff, I am also sorry to hear of your experience. That had to be very difficult for you and frightful too.
I very much agree with what both RiverRunsDeep and Daniel say about it.
Often this type of spiritual enlightenment or as you put it in your post, 'de ja vu' and 'readings are crazy spot on' may have to do with kundalini. Google this and read up on it and think about it. To me it sounds like your kundalini was awakened, both as a result of your traumatic experience of being burned and also as a result of you spending much time with the cards.
to quote the wikipedia on kundalini, which really sums it up well-
"Kundalini can be awakened by shaktipat—spiritual transmission by a Guru or teacher—or by spiritual practices such as yoga or meditation. Sometimes Kundalini reportedly awakens spontaneously as the result of physical or psychological trauma, or even for no apparent reason. When awakened, Kundalini is said to rise up from the muladhara chakra through the central nadi, called sushumna, inside or alongside the spine and reaching the top of the head. The progress of Kundalini through the different chakras leads to different levels of awakening and mystical experience, until Kundalini finally reaches the top of the head, Sahasrara or crown chakra, producing an extremely profound mystical experience.[citation needed]"
which you can find here at this site:
https://en.wikipedia.org/wiki/Kundalini