Not pregnant.Probably not egg bound either.
Looks like dropsy,which is really just another symptom of bacterial issue gone too far.
Few recover from dropsy those that do have re occurring issue usually till passing.The swelling is a signal of how much internal and organ damage has been done...
If that is one of the 'elusive'[IMO] female dwarf gouramis maybe you want to read up on DGI..Dwarf Gourami Iriodovirus...
No real treatment for either issue as I see it.
Get a different gourami..The dwarfs are lousy with issues...