Good Afternoon. I am a 36 year old female and my menstural cycle is irregular. I have never had an irregular menstural cycle. I am experiencing all the normal systems, bloating, mild cramping, sensitivity in my breast. I am spotting but only a little. I have not taken a home pregnancy test because I am spotting a little. I am physically activity, and have been for the past few years. There hasn t been any changes in my diet or weight. What is causing my period to be irregular?