So every year my frenchie gets vaccinated and he is 4 years old now. Last week he got his anual vaccination. He is fine and had no reaction to it up until yesterday. This is 6 days after his injection. He has a massive bump. Its very firm. Its where he was injected. So i took him into the vet and they did a test. My vet said the lump could be a vaccine reaction(which he gets the same reaction every year with a small bump though). But the thing is, the lump has bacteria in it, which caused it to be so big and firm. My vet gave him antibiotics to take for the next 10 days. Has anyone experienced a lump that has bacteria like this from a vaccination? Hes behaving like normal. He's not in pain and eating fine. And still very active.