Is this a possible symptom ?!!

I can't take it anymore ! Lol. Well not really but for the past few days I have been extra gassy & burping everywhere. And all I feel are bubbles and cramping in my lower abdomen. At first I thought I just had gas but gas lasting this longer. Then I thought well I'm just hungry, but when I eat, the pain / discomfort stays. I took a pregnancy test two days ago (blue dye) & it came back positive but I'm skeptical since AF isn't due until Saturday. Opinions please.