Feeling head movement, Or something?

When i sitting up from bed  i feel dizzy with blackout just for 3 second  , then after its just normal  , and its happened for last 3 year , and its not happen every time some time its just happened . Another Problem -before 1.5 month ago  i was traveling in  a bus  ( bus sickness) , then after some days i feel bad , I feel i was traveling in a bus but not ,  i was feeling my own body movement,  in fact  when i was do my head down , head up for work something , its feel like spinning sensation, i was doing lots of strees about this , but after some da ys its feel normal , after 25 days ago i was common cold , it takes 7 to 10 days to recover . but now after last 3 days i feel my head movement , and its feel me bad  , i'm not feeling dizzy , vertigo . but my head movement is feeling bad , when i head down for take some things object  , when i head up ,.i can feel movement  and its feel bad , is it happened for stress or something ? but when I am not thinking about this , i feel norma