Pregnancy symptoms?

So I have had some cramping and heart burn the last couple of days. I'm supposed to be starting my period on July 2nd but I feel like I'm pregnant. I haven't been sleeping, I'm crabby my sense of smell is really on point and I have been craving pickles and all I wanna do is eat. I feel like im getting fatter and everybody around me keeps telling me im pregnant, I took a pregnancy test last week and it was a bfn! What do you ladies think? Could I possibly be pregnant and when should I test??