So I just had my 32 week ultrasound done and they did measurements. My doctor recommended I go have a blood test for down syndrome done because my babies arms are measuring below the 5% percentile. She says that "she isn't concerned and everything else is where it should be". When I had my 20 week ultrasound done and they measured he was exactly where he should be. My results wont come back for another week or week and a half and he could be here by then. Has anyone else had this happen to them? What was the outcome?