HELLO I WAS WONDERING IF MYBE STRESS IS THE PROBLEM.

HELLO I WAS WONDERING IF MYBE STRESS IS THE PROBLEM. I DONT THINK THAT I AM STRESSED BUT YOU NEVER KNOW.. IN JANUARY I HAD MY PERIOD TWICE JAN5 FOR ABOUT 4-5 DAYS WHICH IS NORMAL AND AGAIN JAN 28-FEB 3 OR 4TH MY APP SAYS I WAS DUE FEB 28 BUT SINCE I DID HAVE MY PERIOD JAN-FEB AM I STILL CONSIDRED 6 DAYS LATE AS MY TRACKER STATES. I DO FEL BLOATED AND HAVE TENDER BREAST WHICH SOMETIMES OCCURS WHEN I AM GOING TO GET MY PERIOD ? SHOULD I WORRY