Hi! thank you for your answer. sure it helped.
2 days ago I decided to do the spin chair but I think I pushed so much after 2 minutes of spinning I
all over. I think I should have started with shorter spins. I really have no Idea whats wrong with me but Its not getting sick thats bothering me cause I dont get sick any more. Its my head which becomes a bit heavy and radiates to my neck for 5 or 6 hours afterwards. Maybe my neck is a bit weak or maybe my CNS wasnt made for flying. However I didnt have any problem in EEG or other tests!
But anyway, thank you serb. wish you nice flying.