I had a uterine ablation performed in Nov 2011. Since then, i have not had a period, until last thursday. it started out pretty normal but then 3 days into it, i began passing clots. MASSIVE clots. In a period of 3 hours, i used 8 tampons & 7 pads. I bled like that for 2 days, it slowed down to a normal state. Then last night, the gates broke open again. Is this normal or should i be concerned?