2007-04-17 06:34:43 · 10 answers · asked by Tunasandwich 4 in Pregnancy & Parenting ➔ Pregnancy
They base it off the first day of your last menstral period. Then they add 280 days to get your due date.
2007-04-17 06:38:00 · answer #1 · answered by Heather Y 7 · 0⤊ 0⤋
Your due date is based on the first date of your last period. Some women don't know... so then they do it through measuring your belly and through ultrasound by measuring how much growth the baby has successed in. Congrats! KJ
2007-04-17 13:38:20 · answer #2 · answered by Cupid 6 · 0⤊ 0⤋
It's calculated from the first day of your last menstrual cycle. If you can't remember, they will most likely do an ultrasound to measure the crown to rump and get an estimated due date.
2007-04-17 13:40:18 · answer #3 · answered by Stefani 2 · 0⤊ 0⤋
Due date is 40 weeks after her last menstral period. Just take a calendar and count it out yourself. I had mine right on when I went for my first appt.
2007-04-17 13:44:25 · answer #4 · answered by cndlgrl591 2 · 0⤊ 0⤋
the first day of ur last period count 3 months back and add 7 days : ur due date
2007-04-17 13:49:32 · answer #5 · answered by amormami3507 1 · 0⤊ 0⤋
They ask you the first day of your last period and then add 40 weeks.
2007-04-17 13:37:30 · answer #6 · answered by Anonymous · 0⤊ 0⤋
According to her last period and by measuring the baby via ultrasound.
2007-04-17 13:37:29 · answer #7 · answered by nyyankeesg1rl 3 · 1⤊ 0⤋
From the end of your last period. Its the most effenient way.
2007-04-17 13:59:03 · answer #8 · answered by Ashley B 2 · 0⤊ 0⤋
They go by the day of their last menstrual period.
2007-04-17 13:40:45 · answer #9 · answered by Anonymous · 0⤊ 0⤋
first day of last period or ultrasound
2007-04-17 13:39:48 · answer #10 · answered by AMBER 3 · 0⤊ 0⤋