I've been thinking about pregnancy maths lately....as before I got pregnant I just assumed you were pregnant for nine months.
But then when I did get pregnant I always said it in weeks....so in the end you're pregnant for 40 weeks....or 10 months (which is what I would say) (Although technically it's 9 and a half months of actually being pregnant, but 10 months from date of LMP).

But then when I was say for eg. 24 weeks pregnant....Someone would ask me "So how far along are you?" I would sometimes say "6 months"....and then they would say "So not long to go, only three months".
And then I would confuse them and say "Well not technically...I've still got 4 months to go, cos it's really 40 weeks"
And then they would say "But you're only pregnant for 9 months"
And then everyone would get confused! :-k :-k

Anyway....does that make any sense??
If not ....oh well!
But if it does......how do you calculate your pregnancy?