I am a 38 yr old woman and have always had somewhat heavy but regular periods. On May 12th I started my period and I have not stopped bleeding yet, with the exception of 3 days in total. The first day was after almost 3 months and taking estrogen for a week. Then I believed I had finally stopped on the 19th of this month, four days ago. But instead, I wasnt losing blood, it became yellow, like a cyst ruptured, and did that for 2 days. I started bleeding heavily again yesterday and tonight I am cramping and losing very large clots. I soaked thru a tampon, panty liner and badly thru my pants in a matter of 10 minutes. What is going on with me????? I'm terrified because cancer runs in my family. Please help me. Thank you.