HELPPPPPPPPPPPPPPP ME PLSSSSSSSSSSSSSSS..

I HAD MY PERIOD ON 2ND MAY..IN MAY,I ALSO HAD SEX AND THAT WAS THE LAST AND NEVER HAD ANY AFTER THAT..IN JUNE,MY PERIOD WAS A LITTLE LATE MAY BE DUE TO STRESS AND EMOTIONAL DISTURBANCE. I HAD MY PERIOD ON 9TH JUNE..THEN I HAD MY PERIOD AGAIN ON 9TH JUNE ANG 6TH AUGUST..I WOULD LIKE TO KNOW IF IM NOT GOING TO GET PREGNANT?? IS MY PERIOD REGULAR?? PLSSSSSSS HELP ME..IM REALLY WORRIED ABOUT THIS. AND IT IS IMPORTANT FOR ME TO KNOW BOUT THIS..