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!
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.
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.
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 !!!
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).
Any opinions, advice, statements or other information expressed or made available on BabyandBump.Momtastic.com by users or third parties, including but not limited to bloggers, are solely those of the respective user or other third party. They do not reflect the opinions of BabyandBump.Momtastic.com and they have not been reviewed by a physician, psychologist or parenting expert or any member of the BabyandBump.Momtastic.com staff for accuracy, balance or objectivity. Content and other information presented on BabyandBump.Momtastic.com are not a substitute for professional medical or mental health advice, counseling, diagnosis, or treatment. Never delay or disregard seeking professional medical or mental health advice from your physician or other qualified health provider because of something you have read on BabyandBump.Momtastic.com. BabyandBump.Momtastic.com does not endorse any opinion, advice, statement, product, service or treatment made available on the website. If you think you have a medical emergency, call your doctor or emergency services immediately.