How long does it take for a woman to know she is pregnant

Patient's question:

No

Doctor's answer:

Using a pregnancy test kit, you can usually detect pregnancy 3-5 days after your period. The number of weeks pregnant is calculated from the first day of your last menstrual period. Early pregnancy test strips are claimed to have a 99% accuracy rate, but they can still be incorrect. An ultrasound can be done 7-10 days after conception to confirm pregnancy.