Dates don't line up.

[Shenandoah]

I first posted here a few weeks ago when I confirmed via blood test (quant) that I was pg. Then the first u/s showed me to be 2 weeks behind what the calendar would suggest, then I had cramping and spotting so I figured I miscarried. Today I went for the second previously scheduled u/s and it shows I am 6 weeks along, got a hb 122. According to the calendar I'm more like 7.5-8 weeks along. Also, to really be 6 weeks seems impossible because I would have gotten my first positive hpt just days after conception. Plus, we didn't have sex then. I'm SURE.

As of today I'm still having minor cramping and spotting, same as it has been for a week. Oh, and most of my very early pg symptoms have disappeared, except low milk supply (ds is almost 19 mo).

1.5-2 weeks seems like a large disparity, especially since conception would have to have taken place 2 weeks after sex.

What do you think? Is it going to stick? Not stick? I had already convinced myself I had miscarried so convincing myself I'm really pg now seems to be a stretch.

:sigh

[Sophiasmomma]

no advice just a HUG

[MeredithMommy]

oh, mama, I totally understand. I have been going through the same thing!

This is my second pregnancy and my dd is 3 years old so I really don't get a chance to rest like if feel like I need to. There seems to be alot more stress the second time around!!!

I had an us 3 weeks ago that put me two weeks behind where I knew I should be. I had a lot more bleeding that weekend so I went back the next monday for another u/s and the baby was only a couple of days off.

my doc and midwife both told me that all babys are unique and it is ok for them to measure a little big or small, and not to worry the baby would be born just when it was ready to and not before.

[boscopup]

Conception doesn't necessarily happen the day of sex. It could be 5-7 days later. Mine was about 5 days later - we didn't have sex at the "optimal" times because DH was coming home late and too tired (I cried one night because of this, but it turned out that we got preg anyway!).

And what PP said about u/s dating is also correct, especially in those really early weeks. I've read that the u/s dating is most accurate between 8-10 weeks.

Were you charting? You should have ovulated within 3 days +/- of the "peak" day on your chart, and that would help you narrow down things. But if you weren't charting and are just having to go by LMP and when you had sex, you just need to factor in the lifespan of sperm and egg. Egg lives about 12-24 hours, and sperm 5-7 days. So you would have ovulated anywhere from the day before you had sex to a week after.

I've heard of people implanting as early as 5 dpo, so maybe your body did something like that, hence the early bfp? As long as there is a beating heart and the baby is growing, I'd still take a wait and see approach. I hope all goes well!!!!

[steffanie3]

Originally Posted by boscopup

And what PP said about u/s dating is also correct, especially in those really early weeks. I've read that the u/s dating is most accurate between 8-10 weeks.

And they told me it could be a week either way even based on u/s dates in the 1st trimester.

[miranda]

I hope that you will have a sticky baby.

Please take care.

[wifeandmom]

Originally Posted by steffanie3

And they told me it could be a week either way even based on u/s dates in the 1st trimester.

The error rate for u/s between 8-10 weeks is more like +/- 3 days (5 tops) assuming two things:

1. They are using a GOOD u/s machine with the vaginal probe

2. They are GOOD at doing u/s at this point in pg

The u/s machine the military clinic was using for my current pg couldn't get any better than +/- 12 days at 8-10 weeks, BUT it's an OLD OLD OLD machine that simply needs to be replaced.

When I went to a civilian provider who had a MUCH better machine, the error rate was the standard +/- 3 days. Being able to count on that error rate, however, depends greatly on the expertise of the person doing the scan.

[Shenandoah]

Originally Posted by boscopup

Were you charting? You should have ovulated within 3 days +/- of the "peak" day on your chart, and that would help you narrow down things. But if you weren't charting and are just having to go by LMP and when you had sex, you just need to factor in the lifespan of sperm and egg. Egg lives about 12-24 hours, and sperm 5-7 days. So you would have ovulated anywhere from the day before you had sex to a week after.

I was not charting. This baby would definitely fall under the "oops!" category. We were actually using condoms. I'm sure of when I ovulated. My cycles didn't start back up until January and when they did (here comes TMI) I'm all sorts of goopy when I ovulate. There is no missing it. I ovulated 4-10 to 4-14. According to the u/s conception took place +/- 4-26, 4 days after my period should have started and within 24 hours of a +hpt. 4-28 I had u/s which showed gestational sac (no hb or pole yet) and quant of 211. And did not have sex anywhere near when u/s shows conception. Not even within a week.

See?! Dates are all screwy. :

[Shenandoah]

Originally Posted by wifeandmom

The error rate for u/s between 8-10 weeks is more like +/- 3 days (5 tops) assuming two things:

1. They are using a GOOD u/s machine with the vaginal probe

2. They are GOOD at doing u/s at this point in pg

My ob's office is state of the art with all the latest equipment. The ultrasonographer has 22 years experience. This office gets referrals from other offices because they have the best equipment and staff. And yes, it was u/s with vaginal probe.

[Shenandoah]

Originally Posted by MeredithMommy

This is my second pregnancy and my dd is 3 years old so I really don't get a chance to rest like if feel like I need to. There seems to be alot more stress the second time around!!!

I had an us 3 weeks ago that put me two weeks behind where I knew I should be. I had a lot more bleeding that weekend so I went back the next monday for another u/s and the baby was only a couple of days off.

Your 3 year old won't let you rest? My 3.5 year old dd is good if I say I need to rest. It is my 19mo son who doesn't understand.

So how far along are you now? I'll ask for another u/s in a couple of weeks if they don't bring it up. Guess I should switch to Jan07 group if the baby sticks. My new edd is 1-9-07

[pjs]

No words of advice- just offering support as to how frustrating this whole situation sounds. I hope you get the results you're looking for!

[boscopup]

Originally Posted by Shenandoah

My cycles didn't start back up until January and when they did (here comes TMI) I'm all sorts of goopy when I ovulate. There is no missing it. I ovulated 4-10 to 4-14.

That goopy stuff is cervical mucus, and yes, that's what happens when you're fertile. If you were goopy up to 4/14, then you could have ovulated anywhere from 4/11 to 4/17 (4/14 being your "peak" day, and ovulation occurring within 3 days either side of that). If you ovulated on 4/17, then you would have been 6w1d yesterday when you had the u/s, so that sounds right on target!

[Shenandoah]

Originally Posted by boscopup

That goopy stuff is cervical mucus, and yes, that's what happens when you're fertile. If you were goopy up to 4/14, then you could have ovulated anywhere from 4/11 to 4/17 (4/14 being your "peak" day, and ovulation occurring within 3 days either side of that). If you ovulated on 4/17, then you would have been 6w1d yesterday when you had the u/s, so that sounds right on target!

How's that? I'm confused. If we ONLY had sex 4/11 and I ovulated 5 days later, I still had a postivie hpt 4/25... According to date of lmp 3/25 I'd be closer to 7.5 weeks. I am so conused.

[boscopup]

Forget LMP - it is not important. Ovulation date is what is important. You had sex 4/11, you said? Ok, so the 4/11-4/17 ovulation range still completely fits. The day you ovulate (and thus sperm meets egg and conception takes place), you are 2 weeks pregnant. So if conception took place on 4/11 and that was 2 weeks, then you would be 7w1d today (and thus 7w yesterday at u/s time - still within a week of the u/s dating). If you ovulated 4/17 (and the sperm could have lived that long) and that was 2 weeks, you would be 6w2d today (thus 6w1d at u/s time). With the u/s date you've got, I'd guess you didn't ovulate on 4/11, but probably somewhere around 4/14 or later.

You got a bfp on 4/25, which would be 8 dpo at the *earliest*, and that's entirely possible. It may have been more like 10-11 dpo if you ovulated slightly earlier than that (like 4/14 or so).

And why do I say forget LMP? If you know ovulation time, that's alot more accurate. For example, my LMP is 2/7, which would make me due 11/14. Guess what? I don't ovulate on day 14 or anywhere near it! I have 35 day cycles, and go about 12 days post-peak before AF starts (even when calculating for long cycles, doctors usually assume a 14 day luteal phase, which mine is slightly shorter). I ovulate around day 23. The u/s said I'm due 11/21, and I think I'm really due 11/23, but close enough. The u/s still put me a full week behind the LMP based date, and that is exactly what it should do! Looks like you're in exactly the same boat - ovulating around 3 weeks past LMP, which is why LMP based dating - assuming ovulation at day 14 - won't work well.

Clear as mud?

(man, my brain hasn't done this much math in AGES... )

[Shenandoah]

Originally Posted by boscopup

Clear as mud?

(man, my brain hasn't done this much math in AGES... )

No, much clearer than mud! Thank you very much for your brain power! I'm feeling much better about the dates, etc. right now. If you were here I'd hug you.

[boscopup]

Originally Posted by Shenandoah

No, much clearer than mud! Thank you very much for your brain power! I'm feeling much better about the dates, etc. right now. If you were here I'd hug you.

Oh good! I'm so glad you're feeling better now. Here's to 9 months of sticky pregnancy!!!