mia
Like others have said, hang on to the 90%.
giraffe Oh no! Tis a shocking amount for a friggin key.
parsley
I'm guessing there aren't, otherwise you like to think they'd have pointed you there, but aren't there any online resources/versions? If I wasn't soo fucking tired I'd have a good hunt for you.
murriams Alas, I'm not, but hang around and moan with us! 
kittie Your inlaws sound like my parents, only my parents also comment on how shit a job at being a human I am (ok, not quite that direct, but always comments on my 'career', lack of driving, lack of 'tidiness' blah blah). Well done for getting through it without going totally BSM.
mum2be crikey! A show! No guarantee of anything as apparently almost anything can cause a show (sex, speculum, particularly harsh sneeze). MW told me to note it and carry on with life! Helpful...
What worm said for centiles. Just a gague of LO's development against 'the rest' of the population. Centiles 90% and up and 10% and lower can indicate issues, but it could just mean a big or small baby. It's not usually the centile in itself that indicated an issue, it's the centile + 'symptom' or 'issue' (like GD, or family history of heart problems etc) that they'll look for.
I've had another one of THOSE days. Can't even be bothered to rant about it, but lets just say I didn't get a 30min break, or the 2h sit down I was meant to get
. Still, only 2 more days!
Dinner's ready so I'd better go eat.
TTYL