whats the likely hood of the other bursting ?

hi i was wondering if anyone can help me i was diagnosed as having a cyst of 6cm in my left falopian tube was told not to worry bout it even though it was causing me pain ,i went on for 4 months with this pain so went back to my gp who told me i was fine and gave me co codamal for the pain 3 days later i was in very bad pain and passed out and taken to hospital where i found out it had burst and caused an infection ,on the scan they discovered i had developed another on the right side which is 4cm but on the ovary ,the gynaecologist decided not to remove it ,so i was wondering if anyone out theres had the same and what the likely hood of the right one bursting as so fed up of being in pain and being fobbed off by docs,thanks