Baby measuring too small in weight & femur length at 36+1

Hi,I had my 36 week scan last week & was told that my baby was too small (5lb 6oz) & his femur length was under the 5th percentile.The sonographer was very blunt,he didn’t explain anything except to say I’d need another scan.After worrying all weekend I have another scan booked tomorrow although it’s not a growth one as I won’t get that until next Friday & have just been told I need to see a consultant on Monday too.The NHS does not seem to be very good at communication,which is very distressing.Has anyone else experienced this?I’m more worried about the shorter femur length than the weight at the moment as my toddler was only 6lb 2oz when born.