I CANT STOP FARTING LATELY COULD I BE PREGNANT???????????

I was suppose to get my period on the 24th of November. Its the 28 and she hasnt come yet no usual signs of her also im never this late maybe a day but rarely and ive been more gy burp alot and i fart so much. Tonight i went to pick up sum Chinese cause its my favorite and it smelt awful to me i had to hold my head out the window. Its like i can smell everything lately even the grease in food. Ive been having like tiny twitches at the bottom of my stomach too.