Due date/weeks pregnant

[smjmekg]

How is it that it has been 4 weeks 1 day since my LMP but my tracker says I'm 3 weeks 4 days pregnant? I went by what the nurse at the clinic said for my due date, Dec 12, 2010. Which if I count back 40 weeks from Dec 12, it puts LMP as Mar 7 and it was Mar 4...so what do I go by...I haven't had an u/s it was just the nurse using one of those wheel things...so should I really be due three days earlier on Dec 9? Making me 4 weeks 1 day today?

[smjmekg]

Hmm...oh well, I'll just go by what the nurse said until I get my first u/s then I'll get a better estimate.

[AngellaHas2]

I don't know.that's what the wheel says. U will be 4 weeks on the 6th. I was always told plus or minus a week.  But mine us as close as u online tracker.

[smjmekg]

How does that work? I thought the first day of your LMP is the "first day you're pregnant". How would I only be 3 weeks 1 day?

[AngellaHas2]

Ow n ur 3 weeks 1 day

[AngellaHas2]

Okay I have a wheelif ur period was the 4TH. UR CONCEPTION was about the 17th or 18th. Ur due date is the8 the of December

[smjmekg]

Well I have a 29/30 day cycle, and this month would have been 30 days...I haven't seen the dr yet, but based off LMP 40 weeks later is December 9. I don't know how the nurse came up with Dec 12, but I guess I'll know more when I get my first ultrasound, hopefully in the next few weeks. It still hasn't hit me yet that I'm pregnant. I guess it will be more real once I see the baby. My boobs aren't as sore as with Elijah but they're bigger than they were with him, and I'm more nauseated this time around...

[Limonada]

My tracker was messed up too, compared to my u/s:  it said my EDD was January 24, 2010, but my u/s said January 19.  As it turns out, I think that the tracker was right - I'm pretty sure that Gil was right on time when I was induced, as opposed to being a week late (he weighed 6lbs. 11ozs. compared to his brother who was 7lbs. 6ozs at birth - and Daniel was truly a week late).

[LosingMyMindInGA]

I've noticed there are a few days difference in the trackers/calculators.  I can't put in my lmp as 1 of like 3 days in a row and it gives me the same due date.  I think the due date the nurse gave you is probably what you should go by.  I think they leave a little wiggle room since you can't always gaurantee when you ovulated.  

For me, my cycles are longer so if I use the calculators it puts my due date like 5 days before what my ultrasound says.  If I do a reverse using the due date i got from my ultrasound, it says my lmp was a few days later than it really was.  

does that make sense?