1st pregnancy

Ask lng po? 1st pregnancy q po..nagpacheck po aq s hospital at lying in. Magkaiba po ang due date n sinabi skn..ung s ospital s ultrasound ay june21 smantalang s lying in nmn po ay may 26. Alin po ang kalimitan n tama ?ung s ultrasound o dun s sinabi ng midwife s lying in?...thanks.