Does a negative test result on a test strip mean pregnancy?

Patient's question:

Please ask:
1. The test strip shows negative—is it pregnancy or not?
2. Will there be errors in the test strip results? How big is the error rate?
3. If pregnant, how soon can it be tested?
4. Besides getting a B at the hospital, what other methods can be used to confirm it (more accurate)?
I hope kind people answer one by one~ Don’t answer one-sidedly, or I won’t understand!

Doctor's answer:

Hello! Pay attention to observing your menstrual cycle. If your period hasn't arrived when it should, and it's been more than 7-10 days, you should consider pregnancy.
After sperm and egg combine, it takes more than 16 days for a test paper to show a weak positive result. Although your period is delayed by 10 days, if your ovulation period is also delayed, it might still be too early to detect pregnancy. In this case, you can wait another week and test again. If it's still negative, it means you're not pregnant, and you can take medication to induce your period.

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