Which date do i go by?

MumtoSummerxo · Apr 11th, 2012, 09:09 AM

I'm 5 weeks 1 day however, I got my +opk on 26th March which was CD20, me and oh baby danced that night so i must have got pregnant then which was 16 days ago, (i got my BFP on 5th april) but my LMP was 6th March! Which date shall I go by? The night we conceived (I'm pretty sure it was this night as this is the only time we did it whilst i was ovulating) or my LMP date? even though i didnt conceive until 20 days after which would make me almost 3 weeks less than what the midwife will say i am. I've got an early scan when i'm 8 weeks 3 days, but baby could only measure 5 weeks 4 days so i might not be able to see the heartbeat!

Sorry this is a little confusing! xxx

dustbunny · Apr 11th, 2012, 09:19 AM

I think they like going by LMP because sperm can live for 5-7 days after initial intercourse, so there is a major window going on there. The only way to tell with any certainty is by having a dating scan and then whatever date that is is what they tend to stick to.

akerie · Apr 11th, 2012, 09:25 AM

I would go by 5wks 4dys thats just my opinion and it moves you ahead LOL....A Big Congrats on your Pregnancy!!!!!!!

armywife11 · Apr 11th, 2012, 09:35 AM

I know when I ovulated but my doctors insisted on using my LMP. For me not a huge deal because I have a 31 day cycle so its only a couple days difference. At my 10 week ultrasound the baby measured exactly 10+1 which according to my LMP that day was 10+1. I am just going with that because its less confusing when I talk to my doctors.

They made notes about my ovulation and cycle length because I asked them to but they said they won't change much because the difference in time wasn't that much.

So I think use your LMP till you have a dating scan. I agree that there is a large window of time there.

Mindy_mini · Apr 11th, 2012, 09:40 AM

Go by your lmp until your Dating scan then they will give you and official edd and your gestation at that time

carlywarly · Apr 11th, 2012, 09:51 AM

Ooh how do you work it out by OV date?? I didn't know you could...I got my

on 9dpo. LMP was 11th March, but OV day was I think the 26th (positive OPK 24th afternoon, and morning of 25th)...is my ticker right? Congratulations on your

!!!

Good luck and H&H 9 months to you

Monalissa · Apr 11th, 2012, 09:54 AM

Are you adding the two weeks you're technically not pregnant to the 5+4? If not, at the scan you would probably measure around 7+4. The fetal age is 5+4, but the gestational age is 7+4. I believe scans measure the gestational age. I agree, just go by your LMP until your first scan. That's what I did, and I measured 6 days ahead at my first scan, probably partly due to the fact that I O earlier than the "standard" 14 days (which is not very standard at all! lol).

Apr 11th, 2012, 09:09 AM	#1
MumtoSummerxo Mum (Mom) Active BnB Member Join Date: Mar 2012 Location: Birmingham, UK Posts: 18	Which date do i go by? I'm 5 weeks 1 day however, I got my +opk on 26th March which was CD20, me and oh baby danced that night so i must have got pregnant then which was 16 days ago, (i got my BFP on 5th april) but my LMP was 6th March! Which date shall I go by? The night we conceived (I'm pretty sure it was this night as this is the only time we did it whilst i was ovulating) or my LMP date? even though i didnt conceive until 20 days after which would make me almost 3 weeks less than what the midwife will say i am. I've got an early scan when i'm 8 weeks 3 days, but baby could only measure 5 weeks 4 days so i might not be able to see the heartbeat! Sorry this is a little confusing! xxx

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Apr 11th, 2012, 09:19 AM	#2
dustbunny Mum (Mom) Chat Happy BnB Member Join Date: Sep 2011 Location: Somerset Posts: 1,664	I think they like going by LMP because sperm can live for 5-7 days after initial intercourse, so there is a major window going on there. The only way to tell with any certainty is by having a dating scan and then whatever date that is is what they tend to stick to.

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Apr 11th, 2012, 09:25 AM	#3
akerie Pregnant (Expecting) Active BnB Member Join Date: Oct 2011 Location: Wichita,Ks Posts: 909	I would go by 5wks 4dys thats just my opinion and it moves you ahead LOL....A Big Congrats on your Pregnancy!!!!!!!

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Apr 11th, 2012, 09:35 AM	#4
armywife11 Mum (Mom) BnB Addict Join Date: Mar 2011 Location: USA Posts: 2,683	I know when I ovulated but my doctors insisted on using my LMP. For me not a huge deal because I have a 31 day cycle so its only a couple days difference. At my 10 week ultrasound the baby measured exactly 10+1 which according to my LMP that day was 10+1. I am just going with that because its less confusing when I talk to my doctors. They made notes about my ovulation and cycle length because I asked them to but they said they won't change much because the difference in time wasn't that much. So I think use your LMP till you have a dating scan. I agree that there is a large window of time there.

Status: Offline

Apr 11th, 2012, 09:40 AM	#5
Mindy_mini Pregnant (Expecting) Chat Happy BnB Member Join Date: May 2010 Posts: 2,080	Go by your lmp until your Dating scan then they will give you and official edd and your gestation at that time

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Apr 11th, 2012, 09:51 AM	#6
carlywarly Other Active BnB Member Join Date: Mar 2012 Location: West Yorkshire - UK Posts: 868	Ooh how do you work it out by OV date?? I didn't know you could...I got my on 9dpo. LMP was 11th March, but OV day was I think the 26th (positive OPK 24th afternoon, and morning of 25th)...is my ticker right? Congratulations on your !!! Good luck and H&H 9 months to you

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Apr 11th, 2012, 09:54 AM	#7
Monalissa Pregnant (Expecting) Chat Happy BnB Member Join Date: Nov 2011 Location: Brooklyn, NY Posts: 1,004	Are you adding the two weeks you're technically not pregnant to the 5+4? If not, at the scan you would probably measure around 7+4. The fetal age is 5+4, but the gestational age is 7+4. I believe scans measure the gestational age. I agree, just go by your LMP until your first scan. That's what I did, and I measured 6 days ahead at my first scan, probably partly due to the fact that I O earlier than the "standard" 14 days (which is not very standard at all! lol).

Status: Offline

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