abnormal spotting

Hey ladies,

I see a specialist in a month and have been ttc for a little over a year. I was wondered if anyone else has crazy periods like me... I have my period for about 7 days, and the first two days I bleed about 200ml. The week after my period I have heavy spotting, week three I normally am good and then the week before my period I have light spotting. So basically I bleed/spot three out of four weeks. Has anyone experienced this? All thoughts are appreciated!