Hello and Welcome to ‘Ask A Doctor’ service. I have reviewed your query and here is my advice. If I were your consulting doctor, then I would like to know about - what kind of action did you take (what medicines did you take) - whether you have consulted any doctor for that or not Information provided by you is not sufficient to make any conclusion. Even after taking any kind of emergency contraceptive pill, there is chance of having pregnancy (but it will obviously very less likely). In my opinion, you should always use Barrier contraceptive (condom) not only to prevent unwanted pregnancy but also to prevent sexually transmitted infections. Hope I have answered your query. Let me know if I can assist you further. Regards, Dr. Suraj Khandhedia