Ovarian cyst

Hey, just looking for advice. Went for a USS last week as been having abdominal bloating. A cyst was found on my ovary. The Lady who carrried out the ultrasound said I need to be seen urgently and the next day my GP called to say I have been referred on the cancer pathway to see a Gynaecologist Oncologist for further investigations. I have had a cyst before but I was just scanned 3 months later and it had gone. Just wondering if something of concern was seen this time hence the referral? As nothing like this happened before. 
 

TIA