I was a week, possible a few days longer than that, late for my period.  Early this morning i had very sharp pains, more than normal cramps.  I had watery blood so figured it was my period, but a few hours later i saw a large clump, the size of a quarter.  it was white with barely visable pink dots covering it, almost 1/4 inch think, and a dark red 'mass' surrounding one side of it.  It is not the chicken skin, deflated balloon, uteran wall i have read abotu so far... could anyone help?