Pregnancy week

Assalammualaikum mommies! Sy baru lepas pg scan, kalau ikut tarikh last first period 5/6/2022. So should be 6 weeks 6 days hari ni. Tp td pg scan doc kata kecil lg baru nampak kantung so dlm 4w5d. Normal ke mcm tu? Or something wrong? Huhu#pleasehelp #firstbaby #firstmom #bantusharing