so i had sex for the first time on november 29th, and i dont really remember but i think i had my period the week before that, its january 17th and i still havent gotten my period but i cant be pregnant because he used a condom each time and it didnt have any rips or anything, i took 2 pregnancy test one in december and one a few days ago and they were both negative. i havent been having any symptoms of pregnancy what so ever. Did i just maybe skip a month because now my hormones are just going insane?