I have had the implanon for almost two years now and im showing signs of pregnacy ive even took quizes to maybe give me an idea and all has said most likely pregnant ive also took three pregnacy test one was positive two were negative is it possible that i had false results, Could antibiotics cancel out the birthcontrol? Because i know i was on was on antibotics for a sinus infection in december but the dr said it shouldnt have any affect on the birthcontrol.