My period is late and i am constantly burping and i feel gassy. why is my period late even though i have pms symptoms. why am i burping constantly?

Good question but...: feeling full of "gas" may reflect malabsorption of food (like gluten, lactose), intake of poorly digested food, or choosing foods known to promote gas (beans, fizzy drinks), a stomach emptying too slowly, bacterial overgrowth syndrome, delayed intestinal function, partial obstruction from any cause, infection, rectum problems, and pelvic pathology outside the gut--check home pregnancy test now.