hello ladies im Erica ttc #4

so im out for this month but im experiencing something different af came Sunday the 3rd it was a light day Monday the 4th was heavy and Tuesday the 5th was a medium flow and today the 6th nothing normally I have a 5 day cycle and its consistent starts light to medium to heavy to medium to light then nothing probably a little spotting the 6th day I had a crazy flow this time that lasted pretty much 3 days. any thoughts on way this may be happening