hi i`ve been taking the pill for 3 and a half years during this time my piriod was always regular except for once when i changed the pill from yasmine to yasminelle now this month i didn`t take the pill to give my body a break now this month my piriod doesn`t shows is this normal when you stop taking the pill ?? and is it true that when you stress about the piriod it will delay more plssss tell me and thank u