Is the phlemy and sneezing only in the morning or does it continue throughout the day? As long as he is still eating and drinking without any issues I would give him a few days and see if he works past it. If it gets any worse I would consider seeing the vet, especially if he starts coughing and it sounds like he is having breathing issues. I've never had first hand experience with Bacon getting a cold, but I'm sure someone will be along shortly with some more advice, I'll tag a few people.