i havent been on my birth control for 5 months and my period was only 3 days last month but this month it was a week late and i think only 3 days. its not really heavy. my stocmach is really senstive and my ribs and below my ribs i have been having pains and lower back pains. i felt nauea and like i was goin to throw up my food and i had heartburn and acid reflux alot too. my moods have really wacked out too.