Confusing EDD

Duedate based on LMP is oct 22 na Pero sa transv nung 1st tri ko, my duedate is nov 16 Tapos po etong ultrasound ko ngayon, edd is changed into nov 4 Ano po dapat sundin kasi magkakalayo talaga ang EDD #firstbaby #1stimemom #pregnancy #advicepls #advicepls #advicepls