Please Enlighten me po.

Hello po. Please Enlighten me po. LMP ko po is December 8. Nagtest Po ako Ng pt January 15. 1 week after ako madelay. It comes out positive Po , 2 pt at positive din Po ako sa beta HCG serum. January 20 first check up and ultrasound ko Po. Pero Wala pa pong Makita kundi pagkapal palang Po Ng matres. Advised is repeat scan after 2weeks. Kahapon Po ako nagpacheck up ulit at ultrasound pero Ang Nakita palang Po Is Gestational sac measuring 6weeks of gestation. Supposed to be 9weeks na Po ako based on my LMP Ayaw ko pong maging nega pero sa mga mas nakakaalam Po or naka experience na. Is it possible na Hindi na developed Po SI baby? Wala Po akong any signs of miscarriage. Hindi Po ako dinudugo. Thankyou Po.