Hi I Only Use Once The Norifam The Last Day

Hi i only use once the norifam the last day og my period.after 1 week or 2 week from the period of time of my injection..i have mentration last dec 27 to jan 5.i did not go to the doctor for inject.from december to jan 5 we used to contact with my husband and now feb i dont know for what is my expectation that i have delayed.am i getting pregnant?almost 1 month i think