Over the last few weeks, our dog, JC, has been sneezing upon getting up from a lying position, and has clear discharge coming from both nostrils. He also has had lots of eye discharge. I have started giving him benadryl every 12 hours. He had a vet appointment two weeks ago and was then coughing quite a bit, so was prescribed a cough suppressant. The cough has stopped but now the sneezing has gotten worse. The benadryl seems to help a bit, but i am very worried that he may have something either lodge in his sinus cavity or worse case scenario, a tumor. Our friends just lost their dog because she had a cancerous tumor in her right sinus cavity. It was so sad to watch her go down hill so fast and she lost so much blood every time her nose bled. I hope i am just being paranoid, but i would like to hear some opinions of what may be JC's problem. I've been reading up on dog sneezing, etc and it is all freaking me out. thanks for reading.