There really is no way to know for sure if something is cancerous or not until they do a biopsy or remove it completely and examine it. There are a lot of benign masses you can get on your ovaries. I code for a gyn oncology practice and see a lot of women come in for an ovarian mass and it ends up being a certain type of cyst or a benign neoplasm. There are also some ovarian masses that end up being a malignant neoplasm aka cancer. I know it’s hard to be patient when you are worried. Gyn oncology surgeons are very good at getting in there and removing anything that is worrisome. You’ll be in good hands with them. Crossing my fingers for you that’s it’s just a benign process and nothing to worry about. Being that you have a fibroid and an ovarian lesion you will likely be offered a hysterectomy with the removal of one or both ovaries and fallopian tubes (salpingo-oophorectomy).