Ultrasound Gender Guess

So we had our 20 week anatomy ultrasound and the tech said she wasn't sure but guessed a girl. 
Should I buy pink or hold off? 
I thought gender at this point was easy to determine. 

Glow Resources

Let’s Glow

Glow is here for you on your path to pregnancy

Glow helps you navigate your fertility journey with smart tools, personalized insights, and guidance from medical experts who understand what matters most.

25+ million

Users

4.8 stars

200k+ app ratings

20+

Medical advisors