I agree with Alissa, in that bringing up unfortunate news can sometimes be a good thing for your client(s). It's not an easy thing to do, but if you are going to read the cards, you also have to be honest and tell them all you see/feel/sense/hear with the cards also.
I, too, have read cards that spoke of traumas for my clients. Luckily, my clients were pleased to have a heads up with this, or to be able to have a chance to figure out how to handle the trauma when it began. So, its a good thing.
I've felt chills, and other things, such as a sense of dread, fear or in one case, quite ill, bodily, when I've read things. The worse thing was when I felt very drained, and ill, & nauseated when I saw a family member for my client hospitalized in the future. turns out they were dianosed w/cancer & went through chemo. i think i felt like the person felt after the chemo treatment. unfortunately, not a great feeling to have and thankfully it doesn't happen a lot. I've even forgotten about that until this post. But, it does happen and is just another confirmation that the tarot can be accurate.
I remember the one card for that person w/cancer was the 4 of swords, but i cannot recall the others around it. i have a copy of most of my readings, this one included. it's funny how many of my clients call me back in the future to remind me of what i read to them, (from their copy of the reading) and then tell me how accurate it was.
another client, i told her how someone very close to her in the family was going to be vicious and come after her to hurt her, so to be very careful. I also saw a man who worked with the vicious person, coming to my clients defense & helpiing her. I saw this 3mos. before it happened. i could even tell my client who this 'person' was, but the client would not believe me. Unfortunately, it happened just as I read it in the cards--right down to the last detail. The client was so shocked, and called me to tell me that they could not believe I was able to predict it right to the last detail. I must admit, it was one time, I wish my tarot prediciton was wrong, as she is still dealing with this person now.