IVF due date (news of IVF success in post)

[Anonymous]

So, after 5 cycles, 2 losses, and 1 surgery we are pregnant and have finally been released to a regular OB/Gyn.

Everything looks fine, but I'm rather confused by due dates. Both the nurse and the OB are getting a later (by 4 days) due date than I get based on ER date. Even though I have to keep correcting them to clarify that LMP is irrelevant with IVF (due to BCP, I can't even recall when it was)...but ER should give you the exact conception date and there should be no confusion on this point. Is there something different about the way they calculate for natural vs. ART?

I don't really mind having a later due date than what I think it should be since I don't think I would want to induce early etc, but I find it very odd that they don't get the same result as IVF if they are correctly putting the ER as the conception date into their wheel. And I don't think the issue could be that they are mistakenly using the transfer date (which my OB kept calling the implantation date which makes me think I should switch doctors), because I had a day 5 transfer which should make their estimate 5 days off I think.

Anyone able to shed light on this?

[Anonymous]

NO, but I am similarly confused regarding IUI. I keep telling my obgyn my conception date, but it's like all they know how to process is a LMP date. The baby meausred a few days bigger on us, so I am afraid they will want to induce me prematurely. I have 5 more months to sort it out, so hopefully it will be ok.

[Anonymous]

Never got it sorted out. My RE gave one date, the OB gave a later due date by 5 days. Shockingly, the little one arrived a week "early."

[Anonymous]

Figure out what your LMP would have been based on when you ovulated (a date you know for certain with either IUI or IVF) and use that as your last LMP when asked. I counted 2 weeks prior to ovulation. I never got into any other details with the nurses or techs (who use the wheel thing), although my OB does know I did IVF. You're going to get asked your LMP dozens of times by lots of different people who don't want or need to hear your whole story. They're typically just trying to calculate how far along you are for scheduling purposes for various tests, appointments, and procedures and the other details are irrelevant for their purposes.

[Anonymous]

My OB and the nurses were CLUELESS about IVF timing so I just made up the appropriate LMP date for them. That said, having a later due date isn't the worst thing in the world because then you'll have a couple extra days of wiggle room at the end.

Many of my IF friends also adjusted their LMP rather than rely on the OB to miscalculate the dates.

You'd think it wouldn't be so hard, but it is for some reason.

[Anonymous]

The only catch about the discrepancy might be that it affects your NT screening results. I had my screening done at a separate facility and just gave them my adjusted LMP so it was fine.

[Anonymous]

PP again.

Also the issue of being a few days ahead or behind based on U/S happens to women who don't do IVF/IUI either. (My first pregnancy was not through ART.) Unless the U/S shows a significant disconnect (like a week or more), they seem to not much care and you will still get asked for your LMP constantly. That's just the standard data point they're going to ask for.

[Anonymous]

Anonymous wrote:PP again.

Also the issue of being a few days ahead or behind based on U/S happens to women who don't do IVF/IUI either. (My first pregnancy was not through ART.) Unless the U/S shows a significant disconnect (like a week or more), they seem to not much care and you will still get asked for your LMP constantly. That's just the standard data point they're going to ask for.

Sorry, more people posted. I'm PP 11:37.

[Anonymous]

My OB and RE gave me the same due date. I told my OB I "ovulated" (did egg retrieval) on date x and when nurses ask about my LMP I say that it was date x - 14 days.

[Anonymous]

Anonymous wrote:Figure out what your LMP would have been based on when you ovulated (a date you know for certain with either IUI or IVF) and use that as your last LMP when asked. I counted 2 weeks prior to ovulation. I never got into any other details with the nurses or techs (who use the wheel thing), although my OB does know I did IVF. You're going to get asked your LMP dozens of times by lots of different people who don't want or need to hear your whole story. They're typically just trying to calculate how far along you are for scheduling purposes for various tests, appointments, and procedures and the other details are irrelevant for their purposes.

This. I adjusted my LMP to what it would have been based on my retrieval. My OB practice asked the LMP at every single appt. and wrote it on the checkout slip. The date of transfer, 5-day/3-day, none of that mattered. I said my LMP date so much that I pretty much forgot that it wasn't actually my LMP!

[Anonymous]

Anonymous wrote:

Anonymous wrote:Figure out what your LMP would have been based on when you ovulated (a date you know for certain with either IUI or IVF) and use that as your last LMP when asked. I counted 2 weeks prior to ovulation. I never got into any other details with the nurses or techs (who use the wheel thing), although my OB does know I did IVF. You're going to get asked your LMP dozens of times by lots of different people who don't want or need to hear your whole story. They're typically just trying to calculate how far along you are for scheduling purposes for various tests, appointments, and procedures and the other details are irrelevant for their purposes.

This. I adjusted my LMP to what it would have been based on my retrieval. My OB practice asked the LMP at every single appt. and wrote it on the checkout slip. The date of transfer, 5-day/3-day, none of that mattered. I said my LMP date so much that I pretty much forgot that it wasn't actually my LMP!

14:19 again. I don't think I subtracted 14, though. I think I took the due date my RE gave me and backed into my LMP using an online calculator.

[Anonymous]

Yeah, providing the LMP by subtracting 14d from my retrieval date is probably the right thing to do...but it just frustrates me how clueless everyone is about calculating IVF due dates. It's really pretty straightforward...especially since ER date is the same as conception date, which is a reasonably standard way to calculate due date. I guess it's related to the ridiculousness of calculating due dates by assuming every woman ovulates on day 14 during their regular cycle.

After ART (five cycles of IVF), I feel like I know so much about my fertility...most of which isn't all that hard to understand. I'm just astonished at how clueless regular OB practices are about pretty basic stuff about women's reproductive systems...you don't need to know much about ART to understand that whether it happend in a lab or in your body, the day sperm joins the egg is the conception date. I think my frustration is that after finding a great and knowledgable RE, I really don't feel like I can find an OB practice where I trust the doctors to really understand what they're doing.

[Anonymous]

I'm 7weeks along but at Washington Radiology, with the given transfer date entered in their system, they calculated that I'm at 6weeks.

It is confusing.

[Anonymous]

I felt the same way, 14:26, but then I rationalized it that the REs know a lot about getting you pregnant and the OBs know a lot about keeping you pregnant and delivering babies. But, yeah, it's amazing how clueless they can be about a very closely related field.

One of my OBs for my second pregnancy went through IF herself and really got it. 100%. Such a relief for that pregnancy.

[Anonymous]

Anonymous wrote:I'm 7weeks along but at Washington Radiology, with the given transfer date entered in their system, they calculated that I'm at 6weeks.

It is confusing.

why did you give them the transfer date? I highly doubt that they will know what to do with that. did you tell them 3dt vs. 5dt?