Could Heavy Periods, Thin Lining, Ovary Cyst, Fibroids Be Due To Cancer?

I am nervous because I am 49 years old and went in to my ob/gyn for my annual physical. Told her that I bleed twice in between periods and that they are heavy at times so she ordered an ultrasound which should the lining to be 6mm but I had just started my period that morning. They also found a cyst on my ovary and a few fiboroids. I have a biopsy on Monday and pap, hpv, blood work and mammo all showed up normal. Does it sound like I could have cancer?