Hello I Don’t Remember My LMP Very Well And Based

Hello
I don’t remember my LMP very well and based on first USG, my EDD is 5 October 2016. So I am 34 weeks pregnant. However, due to wrong estimation of LMP (error on my part), my EDD was calculated to be 29 September 2016.
Until my 30 week scan (23 July), everything turned out to be normal but at 34 week scan (20 august 2016), doctor said fetal weight was low (1950 grams) and AFI was low (9.6 cm). She suggested I go to a fetal-maternal specialist and here are the readings I received yesterday (24 August): BPD (83.95mm), OFD HC (106.37mm), HC (300.47mm), AC (274.87mm), FL (57.88mm), HL (51.84mm), Cereb Hill (45.97mm), CM (8.51mm).
The sonographer said my baby had short limbs which could likely be an abnormality and he even indicated Downs. EFW improved to 2016 grams and AFI to 10.8 cm. I don’t know what to make of these observations. For now, doctor has advised me to increase calorie intake and observe in 2 weeks again. I want to have a second opinion. Please help.