I'm a ftm and had my last ultrasound yesterday at 38 weeks, and was told my baby is in the 4th percentile and said she's only about 5 1/5 pounds then the ultrasound tech proceeded  to tell me that my baby could be sick but she wasn't sure. Then after that said her heart looks normal and the blood flow from the umbilical cord to the baby is normal and looks good and that the fluid around the baby is good. So because she's small they sent me for a nts, results of that were fine and was told by everyone else including my ob that the baby is more than likely small because I'm so small myself, I'm 4'11" and weighed 98lbs before getting pregnant. Also that I will have to have a nts twice a week until she's here.                 
                             
        
Re: freaked out by ultrasound results vent
33 years old, Married Oct '11,
Summer '14: Diagosed with hypothryoidism, pollup, LPD, Low AMH, strong FSH.
BFP: 1/22/15. EDD: 9/23/14. Rainbow baby!
I talked to the dr and the other ultrasound tech (at my next visit) about this. Basically what they said is they would do a repeat growth scan in two weeks. But as long as little one has grown some at the next growth scan they were happy. They don't start discussing any of the other stuff until baby is at around 3% and that is if there is no growth or issues with NST's which I was having done for other complications.
As PP have said, the NST are not that big of a deal you can hear baby's heartbeat so I find it relaxing.
I would say if you have to have more ultrasounds or growth scans, then see if there is another tech to scan you. My doctor has too so I scheduled next scan with her.
Also, my dr said the same things as well as said those scans are predictably unpredictable.