I Have Heavy Postmenopausal Bleeding Preceded By Two Weeks Of

I have heavy postmenopausal bleeding preceded by two weeks of premenstrual symptoms, tender breasts, clear mucus like I was ovulating, ultrasound showed 16 mm thick uterine lining they removed a polyp on my cervix that came back benign, my estrogen level is at 40 and I am two years post menopausal, scared to death I have cancer I'm waiting for the results of a biopsy and looking for encouragement . Hoping it was just some sort of hormone surge from the estrogen.
Thank you