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I don’t understand the whole adding two weeks onto your pregnancy… the ob said im 7 weeks pregnant and that was the 13th…so that would mean I would have only been 5?? I went for my sonogram on Monday and she said I was 6 weeks and 1 day…which means I would only be 4 weeks and 1 day?? Someone clarify please?? And who is more accurate?? The Ob or sonogram lady lol?? Would I have been able to hear the heart beat if it was only 4 weeks? And would I have been able to see the cute little blob? I’m just really confused and need a detailed explanation lol ive been trying to explain it to my mom…but have no clue how..and I kind of want to know if the whole scenario is even right…ive only heard from a few people you subtract 2 weeks…

2007-03-22 08:12:39 · 11 answers · asked by Anonymous in Pregnancy & Parenting Pregnancy

11 answers

The whole subtracting 2 weeks thing is for when you're trying to figure out the dates yourself. I would go with what the sonographer said. Ultrasounds are more accurate. Your OB will more than likely adjust your dates and due dates, accordingly with the ultrasound. You might have seen the heartbeat, but you didn't hear it, I don't think. That's normally sometime around 10 weeks.

2007-03-22 08:17:37 · answer #1 · answered by Aaliyah & Natalie's Mommy 6 · 0 1

The OB/GYN Calculates your pregnancy from the first day of your last period to help get an understanding of when you got pregnant since there is no way to tell when you actually conceived. Chances are you conceived somewhere during ovulation which usually occurs two weeks after your period. However, you don't actually subtract those two weeks, they are part of the entire 40 week pregnancy cycle.

At four weeks you cannot here the heartbeat, you would need to wait until you are anywhere from 8-10 weeks.

Go on-line and find a pregnancy calculator, put in the first day of your last period, and this will give you a week by week detail, due date, and other facts about your pregnancy.

Good Luck!

2007-03-22 08:20:27 · answer #2 · answered by kaytee1010 2 · 0 0

If the sonogram lady said 6 weeks then that is what you are, what is so hard to understand ?
A sonogram person measures the fetus. Ob's only round it off.
So therefore a picture and exacts measurements clarify how many weeks a person is.
And if you read about your unborn child, you will see that you cannot hear the heartbeat until maybe 10-12 weeks…
Earlier than that you can only see it beating.

They only say to add 2 weeks to your pregnancy until you get to the Sonogram and they tell you
Your definite due date and how many weeks you are. I hope that help's you :)

2007-03-22 08:35:33 · answer #3 · answered by scoopie110 4 · 0 0

LOL first let me say that I was calling mine gummy bear right after the ultrasound cause I thought that it looked like one. Anyway they start with the first day of your last period. It has to do with the fact that people ovulate at different times. They estimate that the pregnancy will be 40 weeks from the first day of your last period. They can narrow it down with ultrasound when they see how big the baby is. I don't know exactly when you can hear the heartbeat. I think around week 10-12 the doctor will try to find the heartbeat with doppler. Most will wait because you can't always find it right away and it can be stressful to mom to be if she can't hear it. But the ultrasound can tell that your baby's heart is beating and that it is beating at the rate it should be. The best person to ask when you are confussed is your doctor. Just call the office and they will answer whatever questions you have. That is their job! Good luck!

2007-03-22 08:22:32 · answer #4 · answered by hunneybee1979 4 · 0 0

they go from the first day of your last menstrual period because that is the only accurate day they have. Every woman ovulates at a different day and time. Typically, it is 2 weeks after your last period, but that is not a definite so they go by your period. You will often here people say you are 6 weeks pregnant, but gestational age of the baby is 4 weeks. They basically mean the same thing. If you are exact on your last day of your period I would say the doctor is right. Babies develope at different rates, yours could be measuring big or small for its time. If you are not exactly sure of when your last period was I would say the sonogram is more accurate.

Didn't you ask this before, wanting to know who the dad is?

2007-03-22 08:20:27 · answer #5 · answered by dragonfly7887 4 · 0 0

okay doctors go by the first day of your last period to say pregnancy starts there however most women ovulate and get pregnants 14 days after the first day of the last period. so the baby is actually 2 week younger than the doctor says but you are still that many weeks pregnant example : doc says you are 8 weeks the fetus is developementally 6 weeks but you are still 8 weeks pregnant. The sono tech will tell you the age by how developed the baby is. Do not worry this dates are an estiment and as long as your baby grows at a regular rate and you stay healthy your baby will come about 280 days from the day you got pregnant

2007-03-22 08:25:51 · answer #6 · answered by littledevilinyourcup 5 · 0 0

I suggest trusting the sonogram, they judge the baby's age by it's size anyway. Although if you're still just in the first trimester it's really hard to tell, because the measure the size of the baby's head and the length of it's thigh bone.

My doctor had to do a lot of guessing with my babyu because she was a total surprise, with the measureing his estimation of her age was spot on and she was born full term and around her due date.

I think the "two weeK" thing you're hearing is about due dates, most likely your baby can be up to two weeks before or after the date you doctor suggests. It is in fact just a guess, os up to two weeks until your date make sure you have everything for the trip to the hospital all ready. After that just chill and wait and enjoy.

2007-03-22 08:21:45 · answer #7 · answered by spottychan 3 · 0 0

Short answer: they use the last period date and the size of the baby on the sonogram to make an educated guess about your due date, because if you are having sex on any kind of semi- regular basis, they can't really pinpoint the exact time.

The size of the baby on the sonogram is the most important. They know by that if the fetus is developing normally, and that itself is an indication of the age of the fetus.

2007-03-22 08:21:34 · answer #8 · answered by Anonymous · 0 0

The adding 2 weeks thing means that when you are 36 weeks pregnant technically your baby is only 34 weeks along, due to conception and implatation takes about 2 weeks give or take. It is all so very confusing for us pregnant girls. I never knew what month I was technically in.

2007-03-22 08:16:12 · answer #9 · answered by Anonymous · 0 0

the 2 weeks you are talking about is the ones from when you had the unprotected sex to when the egg got implanted. see sperm lives in you 3-5 day that is 1 week and the second week it gets inplanted over that week and the next so that makes 3 and then you start get the homornal pregnancy hormone in your system in week 3-4.

2007-03-22 08:18:08 · answer #10 · answered by chef_05_85 2 · 0 0

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