I AM SO LATE!!

So to add a little detail. Me and my SO are active and we have done it. But pregnancy is highly unlikely as my moods, symptoms, and cervical position all reflect that my period is comming ( more on this later). But my period has shifted duration and time several times since February 2016 and even more dramatically since we became active. ( please note track season also started in January this drastically increasing my cardio excersise). It is now over thirty two days between periods and I want to know why??? My moods have also become very accurate and very drastic( I no longer have inbatween moods. I am either reallly really happy or really really anxious etc.). Does anyone have any answers???