Last week, I noticed that one of my cats seemed to have a bump at the base of his tail and he flinched when I touched it. I took him to the vets who felt his tail and said it was probably due to some kind of trauma, and gave him an anti-inflammatory injection. Last night, puss was licking his tail and I noticed that there was a sore there and it was sticky. Now I'm worried that he had had an abcess all along, which the vet misdiagnosed, and that he needed an antibiotic, not an anti inflammatory. Puss seems perfectly well in himself but I think he needs another trip to the vet for a jab to kill off any infection. What would other cat owners do?