So this is about my mom she's 60 and suffered a heart attack 2 weeks ago, she's waiting to have a bypass, since it happened her memory is terrible I mean she literally can't remember phone numbers or postcodes it's really upsetting me, she couldn't remember my date of birth. Can this come on in 2 weeks ? Surely dementia takes longer to come on right ? I'm worried sick I can't take any more :-( x