Hey. Had unprotected sex on the 27th of August. Took Plan B later that day. Began lightly spotting ten days later. Did not get my period afterwards. Took a pregnancy test and got a negative test result. Still have not had my period since the 27th of August but I don't feel as though I have any symptoms of pregnancy. Probability of pregnancy? Can I take another pregnancy test now and will it be accurate or should I just go in to see my doctor? Thanks.