Not sure if I should worry about it. This is a 2nd night that I had to wake up Twinkie because she either sounded like she was coughing or snorting. To me it sounded more like congested cough. When I walk her up she continued that for a second than stopped. Otherwise she looks healthy and I don’t see or near it during the day or when I am around. It looks like she only does it in her sleep. Anyone have any ideas? Should I contact my vet for this?