If your know your LMP and your OB office doesn't usually do a dating ultrasound, is there anything I can say to maybe convince them to give me one?
I know I ovulated later than CD 14, but I'm not sure saying "I have long cycles, I'm not sure when I ovulated" will be enough to convince them.
Were you able to get a dating ultrasound? What'd you say/do to have that happen? Any advice for me?
pomegranate / 3895 posts
My doctor does a scan at 8 weeks (based on LMP) no matter what. Based on you temping and opking, though, you should have a pretty good idea how far along you are. I know my doctor's office doesn't care when you ovulated - they use LMP to date the pregnancy and are VERY hesitant to change the date (I measure consistently 3 days ahead, but no change in due date).
One option would be to call around to different practices and find an office that does a dating scan. I'm not saying you have to change practices (I think you went to this one for X, right?), but it could be a work around. You would then just go to your normal doctor at 12 weeks when they have you scheduled. Insurance covers a dating scan (or at least mine did), so you might as well get your money's worth!
nectarine / 2527 posts
The only suggest I have is to tell them you don't know/remember when your last period was. I had a dating u/s the first time because of bleeding and then the next time since I had just mc two months earlier so she just wanted to make sure all looked well
Oh and congrats since I don't remember your announcement
nectarine / 2631 posts
Did you already tell them when your LMP was? Because you could say- " I don't know when my LMP was..." (that would work for me because I haven't kept track of ANY of that since P came back after Lil B!)
wonderful clementine / 24134 posts
What is your definition of a "dating ultrasound". Some places may not do an ultrasound right away, but most do one between 8-12 weeks which is still an accurate time frame for dating.
blogger / honeydew / 7081 posts
I told them my cycles were crazy, and I couldn't be sure how pregnant I was. I knew when my LMP was, but because of my history, they scheduled a dating ultrasound.
grapefruit / 4663 posts
@Adira: no advice my dr office wouldn't do one even though I swore we were off by 6 days. They didn't think it mattered.
GOLD / wonderful olive / 19030 posts
Because I have such short cycles, they wanted to see which one that month I got pregnant on (I usually have 2 cycles a month) I'll use this the next time too.
grapefruit / 4988 posts
I got them with both my pregnancies simply by saying "I have long and inconsistent cycles" when they asked about my LMP.
wonderful pomelo / 30692 posts
@BakerBee: Yeah, I actually do have a good idea of how far along I am, but I know the doctor's office will think I'm further along based on my LMP. I really just want the dating u/s in order to make sure everything looks okay! I hate waiting until 12 weeks to verify if things are okay!
@Honeygold89: Thanks! I was thinking at my appointment I'd say I couldn't remember when my LMP was, but I actually already told the secretary on the phone when I made the appointment, so I don't think that will work, haha.
@cheert16: Yeah, I was a dope and told the secretary when my LMP was when I made the appointment! Wasn't thinking!!
@T.H.O.U.: The only u/s my OB office always does is the 20 week anatomy scan. I can get the 12 week u/s if I choose to do the first trimester screening. I'd consider a dating u/s to be one anywhere between 5-10 weeks, basically just to check how far along you are!
@redsmarties: Okay, I'm going to try that!!!
@jetsa: Maybe anything less than a week isn't a big deal to them??
@catlady: Okay, I'm definitely going to try this and hope it works!!
pear / 1698 posts
I think my practice will only change your due date if the dating ultrasound is more than 1 week off from your LMP. At the 20 week ultrasound they will change your due date if the ultrasound shows 10 days off. Not sure what you can say to convince them since it seems LMP is pretty standard (unless you think you may be more than a week or two off)
wonderful pomelo / 30692 posts
@LemonLong: Well, I know I ovulated CD 20 (instead of CD 14), so almost a week off, but maybe not enough to get them to change it? Although I think I'll just say I have really long cycles and hope they give me a dating u/s, haha.
kiwi / 635 posts
I think mine does automatically. But also I strongly disagreed with the due date they wanted to assign based on LMP as I know I don't O near CD14, so I can see where that could've influenced the decision if it had been on the edge.
cantaloupe / 6017 posts
@Adira: I knew I ovulated about a week late because it was temping. My office also offers an ultrasound at 8 weeks regardless, which we did. They still didn't change my due date, because it was less than a weeks difference btw LMP and fetal growth/size. Babe grew consistently for due date based on conception (based on temping) but was born closer to due date based on LMP. So...less than a week doesn't really matter.
I know it's hard to wait though!y
blogger / coconut / 8306 posts
@Adira: so, you don't want a dating scan then? I'm confused with what you actually want. Either way, I'd call my OBs office and simply ask for one.
wonderful pomelo / 30692 posts
@Dandelion: haha, I'm scared that I need a "good" reason in order for them to agree!
@Mrs. Jump Rope: I WANT one. Not because I actually care about the date (I know when I ovulated, I feel confident I know when my EDD is) but because I just want to see this little nugget sooner, rather than later (because I'm paranoid)!
blogger / coconut / 8306 posts
@Adira: so, call and ask? The worst is that they'll say no.
wonderful pomelo / 30692 posts
@Mrs. Jump Rope: Exactly! I'm trying to figure out what I need to say in order to get them to agree! I don't want to give them the option to say no! 
@blackbird: LOL! They'll probably be all "Why are you being such a psycho? You had one healthy pregnancy just fine - stop worrying so much."
wonderful pomelo / 30692 posts
That damn other thread about how common miscarriages are and how rare it is to have two successful pregnancies WITHOUT a miscarriage has made me even more paranoid than I originally was!! This is my second pregnancy and I have been lucky enough so far not to have a miscarriage, so it seems like I'm due one!! I'm scared!
grapefruit / 4903 posts
I'm not sure you need one, to be honest. My practice only changes my due date if early ultrasounds show more than a week's discrepancy from the LMP EDD. With my first pregnancy, I knew I'd ovulated late and showed the doc my charts, but he agreed that we'd just keep that in mind if it looked like things were off. I generally think it's the best approach to be honest with your doc, so I'd just share your concerns and let him/her know why you think your EDD is off. If there's no other reason for concern, I don't think there's a need for extra tests.
cherry / 245 posts
@Adira: Can you tell them you're having a lot of anxiety and really would like to put your mind at ease? There really should be no reason for them to say no, it's not like you're asking for it for free.
cherry / 245 posts
@Adira: I would just say for some reason this time you're a lot more stressed and you would like one if at all possible. I know, it's hard!!
pomegranate / 3895 posts
@Adira: I think you definitely aren't going to be able to get them to do it based on the dating issues (especially since the receptionist didn't really care when you said you weren't sure when you ovulated, etc), but if you call and express concerns about MC and say you would really like to have a scan and make sure everything is progressing right, I think you have a better shot.
I agree with pp that the worst they can say is no.
pomegranate / 3398 posts
@Adira: First off Congrats! Cause I def missed the fact that you are pregnant.
Second, I got a dating one because I was spotting.
Third, as far as the "rare to have two pregnancies without a miscarriage thing" That's unbelievably false.
I had three pregnancies and have three beautiful daughters.
(now I will say I did miscarry well before I got pregnant with my oldest but that was years before and I had three pregnancies with no issues after. )
wonderful pomelo / 30692 posts
@BakerBee: I was kind of just assuming maybe the receptionist didn't know any better and that's why she didn't care?? Maybe the actual midwife will care... though who knows! I wasn't this neurotic last time, haha!
apricot / 294 posts
My husband is a radiologist and he said the most accurate date is from the earliest ultrasound you have (earlier the better), because growth rates can differ so much as different fetuses develop.
With my first I had a transvaginal US at 5.5 weeks (due to bleeding) and that estimated due date was spot on.
blogger / coconut / 8306 posts
@Adira: I don't think you should stress yourself out over issues that other people have had. I definitely doesn't increase your risk.
pomegranate / 3895 posts
@Adira: Honestly? I think she probably knows that doctors base it off LMP and it's not their practice to date a pregnancy. It would be interesting to find out how many bees actually had a dating ultrasound in scenarios where they knew their LMP. I think doctors really tend to go my LMP and not ovulation - although the Hive is a lot more advanced about knowing our dating stuff than the regular Joe Schmo (or I suppose Jane Schmo in this case).
ETA: Their meaning your practice. I hope this doesn't sound harsh!
nectarine / 2079 posts
I don't really understand why you need one. It really doesn't matter how far along they measure you and it won't prevent any unwanted outcome from occurring. That is probably why they don't do them routinely.
wonderful pomelo / 30692 posts
@Crisark: Thanks hon! That's reassuring!
@BakerBee: You didn't sound harsh at all! And you're probably right that it's not their practice to do a dating u/s if the LMP is known.
wonderful pomelo / 30692 posts
@Radish: I don't NEED one. I just want one. I've reads that the chance of miscarriage goes down to 5% once you see a healthy heartbeat in an u/s. I'd just like that peace of mind earlier, than later (and if, gods forbid, the pregnancy has stopped progressing and my body just hasn't expelled it yet, I'd like to know that sooner rather than later).
GOLD / squash / 13576 posts
Just call and ask. I was able to get one at 6 weeks by just asking for it.
pomegranate / 3601 posts
@Adira: def. just call. I guess the worst case scenario is that you'd have to pay out of pocket for it? (Not sure about american health care regulations)
wonderful kiwi / 23653 posts
What about going to an independent sonogram place and paying for one if it's not too expensive? This is of course after you try again w/ your OB.
wonderful pomelo / 30692 posts
@littlek: What did you say when you called? Just "Can I get a dating u/s?"
hostess / wonderful grape / 20803 posts
It's a slippery slope. If you get one now and you know all is well you will then start worrying about all of the miscarriages that occur between 8-12 weeks. Just try to trust your body.
If you really want one just say you are really worried and anxious and want one. Basically that's what I said last time (post miscarriage) and got one.
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