"Completed pregnancy" does not mean a woman who got pregnant, that's solely pregnancies that completed due to death of the fetus or a successful birth of a live baby.

As of March 30, 2021, the v-safe pregnancy registry call center attempted to contact 5230 persons who were vaccinated through February 28, 2021, and who identified during a v-safe survey as pregnant at or shortly after Covid-19 vaccination. Of these, 912 were unreachable, 86 declined to participate, and 274 did not meet inclusion criteria (e.g., were never pregnant, were pregnant but received vaccination more than 30 days before the last menstrual period, or did not provide enough information to determine eligibility).

Here's a screenshot of the table showing characteristics of the participants: https://i.imgur.com/9lrKjmB.png

If there were only 827 that actually got pregnant, how did 1132 get a dose in the first trimester, 1714 during the second trimester and 1019 during the third trimester?