OK since my periods returned after stopping BF in April, they've been a lot heavier - fine. But recently something weird has been happening. Currently TTC. Towards the end of my period I will pass a piece of tissue, it is not a clot (as in is not just congealed blood), it is very definitely a piece of dark liver coloured tissue that is about the size and shape of the half my little finger but a bit more well, sluglike, and it always has a small whitish pinkish bit attached to it like a cluster of cells or something. WTF is this? Is it possibly my egg, attached to a bit of shedded womb? Should I start worrying?