Aw, I feel your heart on this, mama! Honestly, ultrasound is pretty accurate by 18-20 weeks, but there's still that small chance, one of my mum friends was told 100% boy and had a surprise girl, haha! If you're really hoping for a girl, maybe talk to your OB about how confident they are based on what they saw, kasi sometimes angle or baby's position can affect what shows up on screen. Either way, you'll get your girl eventually, manifesto lang natin together!