Baby's Size v. First Day of Last Period v. Due Date??🤔

Question

So before I had my first ultrasound I used several online calculators to figure out my due date based on the first day of my last menstrual cycle (3/14/17). They all calculated that I would be due on 12/18/17.
SOOOOO I had my first ultrasound on Wednesday (5/17/17) when I should've been 9 weeks and 1 day. HOWEVER ☝🏻 The baby measured at being 7 weeks and 3 Day😱. BUT they said my due date would actually be 12/28/17🤔🤔. SO I changed my due date in this app and it says TODAY (5/19/17) that I am 8 weeks and 2 days?!? I am so confused and nothing seems to add up! Please help me😩🙏🏻

Answer

Ultrasound is the most accurate was of dating a pregnancy.

Answer

I had my first ultrasound at 6 weeks 1 day . My last period was March 23rd and I'm due 12/28. The ultrasound tech told me 12/31, but my Dr said 12/28

Answer

This app does not add up with other calculations I've done. I get my first US in 3 weeks though so I'll compare to two then

Answer

It's tricky. Depending on who you're talking to will calculate it differently. There's an almost "grace period" of two weeks because you can never be totally sure of when you conceived.

I would listen to the doctor since they're actually watching the development.

Unfortunately I don't think there's a way to adjust how far along you are, the apps will simply base it off your due date.

Baby's Size v. First Day of Last Period v. Due Date??🤔

Let's Glow!

The Top Baby Tracker App: Embrace New Beginnings with Tender Care

The Top Fertility Tracker App: Your Path to Achieving Pregnancy

The Top Pregnancy App: Nurturing Your Journey to Motherhood

The Top Period Tracker for Empowering Your Menstrual Health Journey