yesterday i got my 12 month male surgery for a lump that was removed on his left leg between his elbow and his lower part of the leg. The surgery went well, he came back with his ankle.paw a bit swollen. The vet prescribed Metacam and Cephelexin. I go to the vets in 3 days to get the incision checked to see if everything is fine. The mass is being tested in a lab to see what it was, those results i will get in 5 days. after research i dont feel safe giving him metacam. What should i do, i gave it once already, and heard it was really bad on the kidneys. Without this medicine, will he still heal and get better properly. He is still playing around like he used to.