Hiya - I can only agree with Gems and a few other here in that I've experienced ovarian cysts with both my piggies, Daisy in April and now Maisy.
When I saw the vet she popped off and gave Maisy an ultrasound. I guess she was probably about 4-5 minutes, then told us she had 1 large and 1 small cyst on each ovary. She gave me a few options and after thinking about it for a few days, (then thankfully coming on here and seeking everyone's advice), I enquired about hormone injections and Maisy was booked in for last Monday to have her first injection and second is due in 3 weeks.
I must add though that although the said vet in question is absolutely brilliant, without a doubt (as she dealt with Daisy's passing and recently with our little yorkie Ozzy, who is fine now), but I don't remember her suggesting the hormone injection. Why?.....I don't know, but she was very good.
These injections are new to me, so we are seeing how Maisy gets on. They may not work, but at least it's a chance for now, rather than rush in and have her PTS just yet.
Hope everything turns out okay for your piggie. xx
PS Just wanted to add that the consultation and ultrasound fee was about £20.00 under exotic pet.