I just took a pregnancy test and was wondering how accurate it is. I had unprotected sex on Jan 25th and took plan b the next day. My period was supposed to start on Saturday. I know that plan b delays your period but I just wanted the relief of knowing of not being pregnant. I believe I followed all the instructions correctly for the test (unsure of the placement to collect urine). Do you think it's accurate or check within a week if my period didn't come?