It's not a regular thing and along with the other 3 cats she is in perfect health. Years ago when another one developed "bloat" I took her to the Vet who should have advised me to put her down. She went through agony for days before I ended it.
I can't afford to rush off to the Vet for every little thing, not with 4 cats.
My cats are family to me, I would probably be on a cruise if they weren't so dependent on me.