Thanks for all responses... I followed your advices and I brought it up today (as I've started telling my story, we agreed to meet now twice per week so that I could finish some parts before the loooong Christmas break).

And hmmm... He said that he actually had said exactly what he had meant: he was feeling sick and he had nausea when I was talking about my past. When I was talking, he was imaging it and of course he is not the robot and he also has some feelings... He said that I do not have to worry about it as he is trained to deal with it and that's actually the reason why I pay him...

So hmmmm... I have some mixed feelings about it, he confirmed that I had made him feeling sick (I asked about it) and he did not say anything like that he felt sorry for me or whatever. He only said that what happened to me is similar (for him) to the story or prisoners in Guantanamo so that's why he felt sick...