Hi, welcome to this site.
Your report states that it was hard to characterize the cyst. Cat scans aren't always the best to determine details on a cyst. A vaginal ultrasound is the best method for doing this. A cyst is categorized as either a simple cyst, a complex cyst (mixed fluid and solid) or a solid cyst. You really need to find out which type it is. A simple cyst usually resolves on it's own in a month or two. Complex and solid cysts don't usually disappear on their own, although it has happened (and happened to some of the women on this forum!). Complex and solid cysts are usually more suspicious and have to be followed closely or removed. IT could be that the cyst appears to be a simple one, although from the sounds of your report, they said it could not be characterized. If I were you, I'd call the doctor and tell him you want a vaginal ultrasound done. He should be in agreement to do this as it is an expensive, easy test to do. He should be following up on this. If he doesn't agree, you need to find another doctor, or get an ob/gyn involved.  Just my humble opinion, but we've all learned that it's easy to get lost in the shuffle and forgotten by doctors. You have to stand up for yourself and your body and find out what's going on. We're all here for you and will try to answer any questions you have. Hang in there!
Robin

Welcome to the site.  Let me assure you that 99% of ovarian cysts are BENIGN.  I really think that you should get a 2nd opinion.  It seems that the dr. was a bit cold!!  Anyway, 2nd opinions never hurt.  You are in my thoughts and prayers.  Godspeed
~Tascha

I am sure they did your scan without contrast because they were looking for a stone.  However, contrast is most important if you want to look at the organs. Sometimes the ovaries are so small that they cannot be visualized.  Same as true on u/s, somtimes bowel gas can hide a small ovary.   Be persistant and ask the questions you need answered from your doctor.