Hi, I have left sided pedunculated fibroid of 9cm 

I went to doctor to remove it he referred me to Pelvis ultrasound,the results showed a possible polyp of 1.8mm surrounding fluid,the genocologist referred me to do MRI to see the origin of the polyp on my cervix ,I did MRI ,the radiologist found a mass of 5 cm in  the cervical canal composed of altered blood ,he suspects the finding a large haemorrhagic nabothian  cyst ,the doctor rang me up saying that the results are fine and not to worry when I visited him in his clinic he told me that he referred me to oncology département to get more investigated he told me that 99/100 the cyst is non cancerous but wants to make sure 100/100,I am now worried as if it was ok why reffered me to oncology in two weeks which means urgent appointment,? Can MRI make a difference between cancerous and non cancerous masses ,I am just worried