Confused about weeks!

So my conception date was 29 December, this makes me 2wks + 6 but I keep seeing online that I have to add 2 weeks on? So am I really 4wks + 6? This is my first ever pregnancy so I’m very confused!
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It's very difficult to pinpoint conception for most people so dates are measured from the first day of your last period. So for the first 2ish weeks of 'pregnancy' you're actually not pregnant at all

Pregnancy is calculated from the first day of your last period (2 weeks before ovulation in a 28 day cycle) so yes you’d be 4w+6. Congratulations x

Katie is right but if you think you know your conception date then yes they’d typically add 2 weeks to it although you’re only technically 2weeks+6. You could download a pregnancy app like ‘ovia’ and it’ll help you calculate all that. But also a dating scan will also help you get a clearer picture

they measure it by the first day of your last period, which is confusing cause obviously you won’t be pregnant whilst you’re menstruating (normally) so idk why they do it this way. usually when you take a digital test that tells you how far along you are you’re supposed to add 2 weeks to it. example: your period began on the 1st of january, you test positive on the 22nd meaning you are 3 weeks pregnant.

@Aimee it's done this way because back before we had any way of testing for ovulation the only milestone we could use to date was the period. So counting 40 weeks from the start of the period was the easiest thing to do hundreds of years ago. But now we know you're not pregnant until after you ovulate.

Yes so it’s from the first date of your last period. So my little one was born 21st sep 24. My last period date was 23rd dec 23. (She was a few days early) so when I found out the tests were saying 1-2 weeks but actually more like 4 weeks 😊

Pregnancy is dated from the first day of your last period to begin with until you have a dating scan and it may alter the due date.

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