Gurl or boy

Aww, based on what lang ba? Kung ultrasound lang, usually accurate na yan around 18-20 weeks onwards, pero may times talaga na nagbago pa rin ang result kahit gaano ka-clear sa screen, one of my mum friends was so sure it's a girl kaya all pink everything, tapos lalaki pala! The safest way talaga is to wait for the birth, pero I get the excitement, kaya ano ba ang sinabi ng OB mo?