ELI5- Why aren’t pregnancies “discovered” earlier on?

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I’m not totally sure how to ask this. So most people find out they’re pregnant between 6-8 weeks. And it’s relatively common knowledge that one does not get their period while pregnant. So my question is, how do people not find out they’re pregnant until around 6 weeks if the average menstrual cycle is 4 weeks? Ovulation occurs on, I believe, day 14 in the cycle, so shouldn’t more pregnancies be discovered at 2-3 weeks when the initial next period would occur?

ETA: thank you for the responses! My confusion began with the the whole “you’re 6 weeks pregnant” when it’s more than likely 3-4 weeks of legitimate gestation due to how doctors begin the “clock” at the end of the last menstrual cycle.

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Anonymous 0 Comments

Something that I haven’t seen mentioned in the other comments: many women don’t have periods but can still get pregnant.

E.g. I was on the contraceptive pill for 8 years and, due to the type of pill, I didn’t have a period in that time. I came off the pill in late Dec 2018, had some very light bleeding in Jan & Feb 2019 just for a couple of days each time, and in March I got pregnant. It took me 8 weeks to realise something was up, and it was only because I suddenly got really bad morning sickness.

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