sick Princess Cichlid....

howdy people...

I got a princess cichlid that doesn`t seem normal.. i think it`s a female...
looks normal other than a larger looking stomach....
seems to swim normally when it does , but normally just lays next to a piece
of driftwood....
when it does swim , it seems to be trying to cough , like we clear our
throats...
not eating as well , been around about 2-3 days....

any ideas or info appreciated....

Brad.....