nalilito na

Bakit po kaya ganun mag kakaiba yung EDD sa utz? LMP ko po is Dec31,2018 hanggang JAN06,2019 pero bakit po ganun mag kakaiba yung sa utz ko . 1st utz is October 14. 2nd utz is October 12. 3rd utz is October 7. 4th utz is September30. Alin po kaya dyan yung totoo, gulong gulo na kasi ako tsaka nasa ilang weeks na po kaya tummy ko??