Just curious!?

Has anybody been like a week late on their period, and took tests that wound up negative. But then you still didn’t get your period, so you take a test a week or so later, then it’s positive? I see “stories” about ladies taking tests and being negative and then boom a positive and they go to the docs and they’re 12 weeks pregnant. I’m genuinely curious if that is actually common?

-to get a negative test anywhere from 4-8 weeks pregnant then get a positive and being like 9-12 weeks?