Bloated, upside down cichlid

Question
My 8 year old convict cichlid began having trouble staying upright 4 weeks
ago, and is now bloated and constantly upside down at the top of the
tank. I've tried feeding peas, water treatments and a saline dip. I feel like
she is suffering and I don't know what to do. Her abdomen is more
swollen on her left side and that stays at the surface. She does eat both
peas and bloodworms when fed. Any ideas? Her scales aren't puffy, and
she has no white spots.

Answer
IT SOUNDS AS IF IT IS SUFFERING FROM INGESTING AIR INTO ITS SWIM BLADDER WHILE EATING OFF THE TOP OF THE WATER. THE PEAS AND BLOODWORMS ARE GOOD, BUT IS IT EATING THEM AT THE TOP STILL? GET SINKING FOOD TO HELP AND ADD BRINE SHRIMP TO ITS DIET. FAST THE FISH FOR A DAY A WEEK TO AID IN THE RELEASING AND PASSING OF THE AIR. I HOPE THIS HELPS. GOOD LUCK SORRY IT TOOK SO LONG FOR ME TO RESPOND, MY MAIN COMPUTER HAS CRASHED! A RATING WOULD BE APPRECIATED.