I am in day 20 of cycle. i had bad cramps yesterday & some bleeding with diarrhea. this morning i passed a clot bit bigger than quarter. ?

See below: The hormonal balance that controls your cycle can be upset by a number of thing including stress, marked weight loss and vigorous exercise. This can lead to bleeding between periods or your period coming on a week early. The passage of a clot may be normal or could possibly indicate a very early miscarriage or possibly implantation bleeding. If your period doesn't come on as expected do a HPT