Cheryl, hun, everything will be just fine. I am sure of it.
Just a little bit on what happened with my little one. I was told she was extremely small and at one stage in my growth scan she was about 4 weeks behind in dates. Her head was their main concern, I was told that it wasn't the right shape. Each scan came up with a different date measurement for her head. By the last scan I'd had it and decided I couldn't listen to them any more because they then told me that her femur was now a concern . I honestly spent most of the last 10 weeks of the pg just feeling completely scared out of my witts.
I did end up with a very heathly, but petite little darling and she looks and is, just perfect. So what I am saying is try not to worry because I think that most of the time the scans are so not accurate.
Take care, relax and enjoy the last of your pg. xx