Help...

My cycle usually has been 25 to 27 days... Today is day 31. Started light spotting last night. Put pad on and went to bad, woke up nothing only really dark brown when I wipe... Boobs were sore as usual for 3 days before and now a little cramping. At first it was just brown while wiping for a while now it's like a cycle light brown to red color. Should I consider this a cycle or wait and test anyway?