Are these symptoms or pregnancy??

My period is due in 3 days but for the past few days I've had a lot of cramping in my lower stomach my boobs are also super sore!!! And my appetite has been like INSANE!! I don't eat chili or Cole slaw and ate FOUR hotdogs with chilie mustard and slaw and was still hungry. Are these pregnancy signs or could it just be my period?? Thanks for the advice in advance!!