Thanks for writing to DoctorSpring.com with your health concern.
Please upload the scan results.
Yes, with a large cyst that is complex ( septations, debris ) and plus the incessant pain, removal is mandated.
I definitely feel you should go ahead with oophrectomy ( removal of ovaries ).
Please do write back with the uploaded scan report.
I have gone through the report.
Compared to the earlier scan done in August, the ovarian size has increased, plus the determining factor is your quite significant amount of pain.
Yes, a removal would be in order.