Yes! Me! I was measuring about the same as you, poss a bit smaller, has been since she was 26 weeks. Always 4-5cm out. No reason was found in the scans, everything seemed ok. The hospital decided to induce me a week early all booked in, and baby arrived two days before this on her own. When they talked about inducing, they gave me the option, gave me the info about it and suggested heavily I do it, but left it up to me. Midwife did a check of my cervix to see if I was 'viable' and I was 1cm dialated already. She said it was a matter of time, and therefore we booked the inducement (? induction?) for the monday. DD came on her own (with a little romantic 'help'? ) the saturday before. If I had not been 'viable' ie body preparing for birth anyway, I would prob not have agreed to being induced. Of course it depends on why your lo is not growing.
She was small at 5lbs, but perfectly healthy, apart from a little jaundice which was nothing to do with the weight. She was strong from the outset, and whilst still a dainty girl, she has been healthy the whole time, had the usual minor cold, meeting her milestones early/on time, happy, eats well, sleeps well.
They never found out why she was not growing well inside, placenta and cord seemed fine, she was getting oxygen/nutrition, just did not want to be there..
I hope it is the same for you. It could also be that the baby is quite far into the back and therefore the measurements are just not reading accurately. I know it is easier said than done, but try not to worry. If there is a need for induction, they will try to give you some time to prepare...
Good luck...