Hi.

I have had very light pink spotting for 3 days, on the 3rd day towards the afternoon it turned brown. Later on that night I began to lightly cramp and bleed, the blood wasn't heavy but it was the most blood I had seen all week. On the 4th day I woke up with heavy bleeding and bloodclots with cervicalmucus in it. Today is the 5th day and now I'm just bleeding here and there and occasionally I still have the blood clots. What can it be? And what causes it ?