I have a 3.9 x 3.2 x 4.3 cm complex cyst with internal echoes and thin echogenic septation. I've had 3 transvaginal ultrasounds since June and it keeps getting bigger. My Gynecologist has now recommend that I remove cyst. I am really worried it could be cancer. I have a history of breast cancer and colorectal cancer. I am 47 and am premenopausal. Should I be worried?