What in the world is going on!?

I completely skipped a period in April, but ruled out pregnancy. I got my period around the normal time in May but was unusually light. Now 9 days after my last period I'm bleeding fairly heavy (clots and all). Could what I thought was my period actually have been heavy spotting? Should I consult my Dr.? Any and all advice is much appreciated! I feel so out of whack and it's not helping the fact I'm ttc.