The Clearblue Pregnancy Test with Weeks Indicator is over 99% accurate at detecting pregnancy from the day you expect your period.

It shows weeks since conception as 1-2, 2-3, or 3+ on the screen, with a 93% accuracy rate. Doctors may date your pregnancy from the first day of your last period, not from when you conceived. The test can provide results up to 5 days before your missed period (4 days before your expected period), with lab testing showing pregnancy detection rates of >98% one day before, >97% two days before, >90% three days before, and >65% four days before your expected period.