Hai! Jangan worried sangat lah, uterus size tu memang boleh vary dari orang ke orang, even at the same gestational age. A few of my mum friends pun experience the same thing, and their babies turned out perfectly fine! Tapi sebab ni ada sedikit perbezaan, best you mention it to your doctor at your next checkup or ultrasound, they'll measure properly and make sure everything's on track, okay?