I have a year old Westie, named Trigger. I noticed yesterday that he had not been feeling well. He would not play like he used to. Then I heard him snort. He's never done that. He's not constantly snorting but he'll do it once in a while and it sounds like he's chocking or there's something stuck in his nostrils and throat. Is something wrong with my Westie? I am taking him to the vet this coming Monday but what should I do before going to the vet? Is this something serious that I should be worried about? Please advice. Thank you.