Congrats sa baby, mama! Pero talagang importante na tanungin mo ang OB mo directly about which EDD ang most accurate, usually ang dating from the second ultrasound (when baby is first visible) or third ultrasound tends to be most reliable, pero bawat case is different, kaya siya lang ang makakapagsabi ng sure. A few of us moms nag-undergo din ng different dates across scans, at ang doctor namin ang nag-explain kung bakit, hormones, baby's growth, timing all factor in. Preg mo, preg ng OB mo ang hawak, so don't stress! Ask mo na lang sa next visit mo, okay?