For a year we have been treating our korgi for heartworms- his belly has gotten very bloated- after three trips and xrays at the vet- the only thing they can do is put him on a dieretic and blood pressure lowing medication- Which neither help with the bloating- willl this eventually decrease as the adult heartworms die or is this part of his life forever- he is about 11 yrs old- by myself I can't even get him in the car he is so big- or bath him- anyone ever ran into this problem?