I was in hospital recently at 27 weeks but was only measuring 24. I had a growth scan the following day where I was informed that actually i was measuring a few days ahead of what I am, not 3 weeks behind like my fundal height suggested.
Fundal height isn't really an accurate way of measuring you so I wouldn't be all that concerned.
I measured No growth and then 3weeks behind with dd-growth scan showed everything was fine and she weighed nearly 7lbs,born on due date a week after scan. im sure fundal growth isn't even used in some European countries-I wouldn't worry.