Baby measurjng small

Hi ladies. I'm currently 36 weeks and 3 days and I have to have ANOTHER scan as my daughter is measured small. This will be my 5th one this pregnancy and last scan she was below the 25th percentile. When I went to the midwife yesterday it was showing that my daughter hasn't grown in the last 2 weeks and is now not even on the growth chart, yes I know this isn't the most accurate way of measuring but I'm just wondering Has anyone else been in this situation and what was the outcome? I'm obviously waiting for the scan later but just curious as to what other peoples experiences were :) thanks :)