Hi Sophie! Welcome to 3FC and good luck with your new journey! I have one question - how old are the books/calculator that you have? There is a new 2012 points plan (actually 2011 I believe started the new plan, with a few tweaks in 2012) - but if you have books from before, the point calculations will be different from the WW app. Maybe the easiest way would be to tell us how many points you get a day. Then we'll know if you are on the new plan or the old one.
We're fat chicks, not doctors. Please see your physician before taking advice found on the internet.