Could it be pregnancy or what?

let me start by saying my last period was nov 27 2010, the last time i did it was around like dec 16 or 17th 2010, i took a text after christmas it said negative, i don't know if its cause it was to early or what .. then later on after that, i started sleeping more, every time i eat my stomach starts to hurt, i have cramps still Thu, FEELING like my period is coming, but it never does, ive only Thu up about 4 times, after i ate ice cream, i know the symptoms of pregnancy, but i just dont kno, i dont think i am but my mom swears up in down i am, sayin mother intentions or whatever, but lately everything my step dad has been cookin smells like sauerkraut, & everybody i know in this house knows i hate it, but everytime i say it smells like it, they say no it dont.. i dont kno if its my smells messed up, or what.. is that a sign of pregnancy ?