measuring behind, really worried

NewlywedInNewYork · October 2011

My LMP was 8-10-11 and I had my first ultrasound at what I thought was 6 weeks 5 days, and they told me that I was measuring 6 weeks 1 day, with a heartbeat of 110. Today, I had an ultrasound at what I thought was 8 weeks 2 days, but they said that I was measuring 7 weeks 4 days, with a heartbeat of 152. I'm really happy about the heartbeats but have a nagging worry about the measurements. I would have been okay with it if I had measured 4 days slow both time, but going from measuring 4 days behind to 5 days behind makes me nervous. I'm scared that the baby is just going to measure more and more behind and then die or something... am I being completely crazy? Is the heartbeat more important? Should I start going by the measurement dates in my head or the LMP date?

ECHC829 · October 2011

Do you know when you ovulated? You may have ovulated a little later which is wht would throw the dates off a bit. Plus it's normal to be +/- 4 days in either direction.

My LMP was 8/13, my IUI was 8/29 (cd16, not 14) and I'm still measuring 2 days behind. My doctors aren't worried at all.

awesnap · October 2011

It's not uncommon to be measuring behind or ahead, ovulation could have happened earlier or later than you expected. At my ultrasound, I measured a whole week behind, and they switched my due date. I also was charting, and know I ovulated on day 23, not day 14 like they assume when going by LMP. So your measurements could be spot on!

Also, a difference of one day is not a big deal, it could be one millimeter off and just a measurement error. It's so hard not to worry, but it sounds like things are going well so far, a strong heartbeat is always a good thing.

itsmegin · October 2011

What did your doctor say about the measurements? It's a very good sign that there is a heartbeat and that baby is growing. I wouldn't necessarily panic over 4-5 days behind, as at your stage the measurements are so tiny that a millimeter here or there can mean days.

All you can really do is wait and hope, but remember that having a heartbeat is a very good thing. T&Ps that your LO pulls through and catches up or is perhaps just a little girl or guy.

ktsnshn · October 2011

I would not worry too much at this point. I would try to take comfort in the fact that there is a heartbeat and your LO is growing. I hope he or she catches up for you soon. Hugs.

chusum · October 2011

U/S measurements can be +/- 3 days. I wouldn't be concerned with measuring behind 4 days or even 5 from the date of your LMP, you could have ovulated late.

NewlywedInNewYork · October 2011

Thanks - unfortunately, after months of careful charting, I conceived while taking a break (ok, that's not unfortunate at all but you know what I mean!) and I am not sure when I ovulated. I normally ovulate on CD 16 and I believe that LMP calculations go by CD 14. So I would think that could account for a couple of days?

However, things could have been thrown off a little bit because of my chemical pregnancy so I don't know if I can compare this to a normal cycle... I confirmed the C/P on 8/8, started bleeding on 8/10, and then had this BFP on 9/6.. I will say though that the BFP was so light it was basically nonexistent on 9/6 and I was kind of surprised that on "CD 27" it was barely there like that. I can assure you that no normal person would have seen the line haha. Maybe I shouldn't have counted 8/10 as CD1? I don't even know!

SoonToBeMrsDTS · October 2011

The further along you get, the less accurate the measurements are. A difference of one day doesn't matter, it could have been the way the tech measured. At my first u/s some of the measurements said I 6w6d and others said I was 7w. My 12w u/s I was measuring 2 days ahead of what I was at my first u/s. It's normal to be worried but I think your OB would let you know if there was anything to be concerned about. Your OB will let you know what EDD they'll be using so I would go by that.

ColleenS629 · October 2011

You don't need to be worried about a 1 day difference. In the beginning I was getting a u/s every week and from one week to the next, one of my twins went from measuring 2 days behind (at 6w2d he was measuring 6w0d) to 4 days behind (at 7w2d he was measuring 6w5d). I did IVF so there is no guessing about the date of conception. By the next week (8w1d), he had totally caught up and was measuring right on schedule. They are so small when they are as early as you are that even the angle they are at can make a big difference in the measurement. I definitely think you should start going by the measurement date in your head or you're going to drive yourself crazy the entire pregnancy.

FmrAFBrat · October 2011

chusum:
U/S measurements can be +/- 3 days. I wouldn't be concerned with measuring behind 4 days or even 5 from the date of your LMP, you could have ovulated late.

This. In addition it's really hard for them to tell a lot this early on. Sending T&Ps that all goes well for you.

NewlywedInNewYork · October 2011

Thanks guys!

sbphotos · October 2011

ktsnshn:
I would not worry too much at this point. I would try to take comfort in the fact that there is a heartbeat and your LO is growing. I hope he or she catches up for you soon. Hugs.

Exactly this! Big hug!

seansmtgirl · October 2011

my LMP was on 8/10 as well and when I went in for my first US which should have been 7 weeks on the nose I was measuring at 5 weeks 4 days. We thought it was another miscarriage but they had us come back a week later because my Beta HCG was right where it should have been and so at what should have been 7 weeks and 6 days we saw the heart beat and I measured in at 6 weeks and 3 days so they said I just O'd really late in my cycle and they changed my due date and the day I start a new week. So according to them I will be 7 weeks tomorrow. Don't worry until the doctor says to worry all you will do is get more heartburn than the baby will give you anyway.

busterbeagle · October 2011

My LO measured 6 days behind what I expected at my first u/s: 8w4d when I expected to be 9w3d. We know when she was conceived, so I was worried that something was wrong. At my NT scan, she had gained another 3 days. The tech said that measurements vary based on who takes them. Another thing to remember is that the baby is so tiny that early that even the slightest error in measurement can mean days on the interpretation.

The hb sounds healthy, and unless you doctor is concerned, there is probably nothing to worry about.

My EDD is based off that first u/s, but LMP wasn't an accurate indicator for me because I got pregnant on a weird cycle. I would ask your doctor if the u/s changed your EDD, but sometimes if it is a week off or less, they won't change it.

measuring behind, really worried

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