Worried I may have cervical or uterine cancer

I went into my doctor  after months of pelvic pain and my periods being so messed up my bleeding is out of control some months I bleed for 13 days very heavy and then the next month I don't have a period or I'm just bleeding all the time. And the pain is unbearable and it's in the middle not on the sides on my abdomen. I had an ultrasound  today and haven't got the results yet. I have also lost a lot of weight recently for no reason at all. I'm scared my aunt is fighting for her life her second round draft of cancer. My other aunt lost her battle in 07 and my grandfather lost his battle in 08.