Lollypop has been sneezing a lot the past few days and I noticed that her ears seem heavier than normal and feel swollen, although I cannot tell with the naked eye. Is it possible she is allergic to tree pollen? I see people use benadryl fairly regularly with their pups. Should I panic and run to the vet? or wait a few days to see whether the symptoms abate a bit? She seems OK behavior wise, but I admit I'm worried. Lollypop is just over 11 months old, so this is her first spring and her first exposure to spring pollen(s). Any advice?