<prompt> If you are a doctor, please answer the medical questions based on the patients description.I took a pill for abortion October 2 and the 3 and had unprotected sex November 18 is it possible to get pregnant but I took a pregnancy December 7 test it came back negative but I been having symptoms is possible my ChatDoctor level isn t normal and have a false negative  <response>: HI, Thanks for the query under Chat Doctor forum. I understand your concern. THE effect of emergency contraceptive lasts maximally for 8 days. So the pills you had taken on October 2-3 is not likely to offer contraceptive protection on November 18th. Home pregnancy test is best done after 8 days delay in periods OR after 3 weeks of unprotected sex. Insufficient in Chat Doctor before the advocated time can not be detected in urine so the urine test turns -ve. So you need to repeat HPT at proper time.to have confirmed results. Thanks. 