Ay, 31 weeks pa lang kaya totally possible na mag-turn pa ang baby mo before birth, kahit girl man talaga or hindi pa fully confirmed, breech positions kasi talaga nakakaharap ng ultrasound tech, lalo na kapag ganyan ang position ng baby mo! One of my mum friends was told girl at 28 weeks pero parang uncertain din dahil position, and she ended up with a boy na, so hindi lang position ang issue, sometimes ang angle lang talaga ng scan. I'd say just enjoy the mystery nalang for now, at basta healthy ang baby mo, yan na ang importante, diba? Pero if you want clarity, pwede mo ring iask sa OB mo next visit kung pwedeng i-confirm ulit when baby's in a better position.