Quoting Froggy Mama:" I have had PMS symptoms much like those you explain."I only get a couple hours of cramping after it starts, and so far my period has only ever started a couple days early, once in a blue moon. I've also been on this birth control for about a year... I'd rather an early period than being pregnant but if my birth control starts smurfing with me I'm screwed - it's the only one I can take!
Quoting Momma +2 Girls:" If your period is due in a week then if u have an average cycle/ovulation, ypu probably would have conceived sometime last week so it would not be impossible to get a positive with fmu."