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Would it be possible to add a feature in the My Baby's Profile and Due Date section that would allow users to see what their due dates would be with the Parikh's Formula system y'all use? After seeing how their due dates changed with the Parikh's Formula, users could then decide if they want to leave their due dates that way or manually change their dates back to what was determined by their doctors. I think many users, myself included, would really like to have the ability to go back and forth between the Parikh's Formula and manual so each user can select the option they prefer the most. Would it be possible for this to be part of the next update or soon after? ☺️
Due Date Calculations (how they work, and why they may have changed!)
We've been getting a lot of questions about how the due date in the app is calculated, and I've got an answer, straight from our engineers:
"The way that we initially calculate the gestation age on the app is actually slightly different than the way a health care provider calculates it. Your doctor will set the start date of the pregnancy as the LMP and add 40 weeks to calculate the due date. But on our app, we use the “Parikh’s Formula.” This is the expected date of delivery (EDD) = Last menstrual period (LMP) + 9 months + (Duration of previous cycles - 21 days). It's more complicated but also slightly more accurate when predicting the due date. We give users the option to edit the due date (and thus the gestational age) in the app. If you go to your More page > Baby Health Profile and Due Date > click the due date, you can edit it to match what your doctor has said. But because the conception date is still an estimate (even for the doctor, they're estimating when it occurred), the gestational age of the pregnancy may differ by a few days."
Some people have also been asking about the difference in due dates between Glow and nurture. Glow currently uses the simple LMP calculation. So if you're curious about the difference between the two, you can see your Glow due date vs your nurture due date. We're looking at updating Glow to use the same formula as nurture.
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COMMENT (116)
My glow due date was spot on with my doctors’ 👍🏼 10.21 🧡🎃
Ka
Yes, my water broke on 10.18.18 and he arrived that same evening. ❤️
Ce
Baby make its appearance yet? :)
St
The app and my dr are the same as well, but ultrasound I got done at 9w3d showed EDD of March 25 instead of April 1st. Only a week off but I’m going off of ultrasound 😉 both of my kids are born in November. My lmp for my son was February 11 and he was born November 17, which was his due date, I don’t remember my lmp for my daughter as that was over 12 years ago lol but it would have been near Valentine’s Day and she was born November 16 with EDD of November 24. Unless you have really long cycles, I don’t see how lmp of January could get a edd of November, I’d think October for sure! But I’m also not a medical professional lol
How come my gestational age is different on Glow than Nurture? Glow says 7 weeks 6 days and Nurture days 7 weeks 5 days.
Ce
Mine says I’m 4 weeks further along because I had a miscarriage and got pregnant before my next period. Wish they could allow you to change it... very painful to have it say that.
Ai
👍
Al
I can read. That still doesn’t answer WHY they used 2 different formulas in the first place.
Ok, but why did it change how far along I am pregnant, but the number of days left is still correct when the app updated. For example. Today I am 33 weeks 1day, says 48 days left (so 7 weeks x 7 days minus 1) but it now says I'm 33 weeks exactly with 48 days left, so the days left and weeks along don't match.
Er
I had ro uninstall and reinstall the app to get mine to show correctly
Be
Anytime :)
As
Mine is fixed now as well, thanks for the heads up!
I was curious about this since my doctors office gave me a different date. Glow doesn’t match glow nuture.. so what’s the issue there?
Fi
If I change my due date will it automatically change how far along I am?
Al
I just manually calculated my due date following the Parikh's Formula in the post, and it's exactly the same date as what my doctor's office said. 😊
Al
Thank you, and I look forward to all future updates. Please let them know that all their hard work is truly appreciated, and everything you do for us is truly appreciated too❣️🤗💟
I'm not sure how glow could have possible based my due date off of a my cycle, I was exclusively breastfeeding and did not have a cycle. My last cycle was February 2018 and before that January 2017... that would put me a lot further along then I actually am. I got pregnant in June2018.... so this is BS lol. I didn't even track that period in 2018 because I was NOT trying to get pregnant again so soon. I wish they would have just left it as is for existing pregnancies andfor new members joining after this new formula usage have them use it. Because now it's not making any sense
Glow and nurture had different dates for me. It was 8 days off. I had to manually fix it and it’s still 1 day off.
Pi
Oh! Did not know Glow and nurture uses two different calculations!
Ra
Glow currently uses the simple LMP calculation, and Nurture uses the more complicated but more personalized calculation.
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