Can ultrasounds be wrong?

Cera • 26. Minnesota. 💏 Mama to Owiyokipi Win 4/5/19. Breastfeeding FTM. 🤱🏽 💞 👶🏾

Soooo we finally found out what we are having and ITS A GIRL!! 🤗💝🎀 I am so excited it’s not even funny. However when the doc did her ultrasound she said she was only 80% sure. Now I’m worried that it could be wrong. Are those odds sufficient or not? I know ultrasounds aren’t 100% effective but still. Should I hold off on buying things? We told our families so it’s not really a secret. Anyways either way I’ll be happy but for planning purposes I’m a little weary.