example: I concieved May 15 but they start counting at May 1st, which was the first day of my last period. Technically I wasn't pregnant yet, right?
2006-11-02 15:25:04 · 6 answers · asked by Anonymous in Pregnancy & Parenting ➔ Pregnancy
because most women don't know exactly when they conceived, they know the date of there last period, the calender wheel they use is set that way
2006-11-02 15:34:50 · answer #1 · answered by Nicole 3 · 1⤊ 0⤋
because there is no way to tell when u actually concieved they count from the first day of your last period so you you can give or take a week or two from the due date they give you! only a small percentage of babies are actually born on their due date!
and an ultrasound can better detrmine the age of your baby!
but your right technically you arent pregnant during your period.
2006-11-02 23:35:59 · answer #2 · answered by Krissy 4 · 1⤊ 0⤋
I'm guessing that it's because it's hard to pinpoint exactly when a woman ovulates and thus when she conceived so in order to estimate when the baby's due date is the lmp is used. The doctor will also do a sonogram and measure gestational age according to those measurements and may adjust the due date accordingly.
2006-11-02 23:41:18 · answer #3 · answered by Miriam Z 5 · 0⤊ 0⤋
It's just the standard way they count it. I personally think it's more tradition than anything else! When you go for your first sonogram, they will measure the baby and probably refine your due date.
When I was pregnant the last time, the doctor was asking me when my last period was, and I told him, and he was measuring the baby and he said, "Hmmm...no, this isn't a 9-week fetus." So I gave him another date, and he measured again, and said, "Bingo! That's 7 weeks and that's the right size. How did you get that date?" I said, "That's my anniversary!" LOL!
2006-11-02 23:28:38 · answer #4 · answered by OK yeah well whatever 4 · 1⤊ 0⤋
because ovulation is different for everyone. by counting from the last period they get an estimate-that is all. not everyone knows the specific date of conception because of the discrepancies in when you ovulate and the fact that sperm can survive several days inside you and it also takes a bit for the embryo to attach itself in the uterus. A woman only has 12-24 hours in which they can even get pregnant. congrats!
2006-11-02 23:32:25 · answer #5 · answered by rwl_is_taken 5 · 1⤊ 0⤋
They start counting from the beginning of your cycle.
2006-11-02 23:37:42 · answer #6 · answered by karamel 3 · 0⤊ 1⤋