hi i feel totally fine when im laid in bed but as soon as i get up i start feeling rubbish ,does anybody get sudden fears like oh my god im going to die in a minuet ,they make my eyes feel weird and all gooey and tingley in side , i no this sounds silly but do u think i might have a tumour in my brain and when im laid in bed the blood can get past it but wen im standing and stuff its kinda blockin the wat thats why i feel all tingly and weak please let me no if anybody has or has had this thanx