gender predictions

Asmara • Thu, Apr 27

I had my ultrasound on 20th week but UT just show us two black dots, she is not sure but she said it seems to be girl, but I didn't seems a girly part to me at all. I already have two girls I know the ultrasound picture of girl part, now I was confused what should I buy blue or pink!!!!!!

Is there any chances that ultrasound technique might get wrong???? Or should I go for neutral color?? Any suggestions please!!!!!