I would talk to the doc or nurse about his pain level. I know that Pixel (who is admittedly a whimp) doesn’t handle pain well AT ALL. Even so, my vet doesn’t want her in a lot of pain, even “for her”. When she was spayed, and again when she had her anal gland abscess, which I’m sure is NOTHING like what Perry is going through, they sent her home on what they THOUGHT was adequate medication. Pretty much what Perry is on. When I called to tell them she was screaming after the first night home, they immediately had me come and pick up a different med in the case of her spay, and to up the dose in the case of her anal glad abscess.I really can't figure out if the meds are managing it well. He's so stoic (except for the trying to move and screaming bit) most of the day so I really can't tell if he's actually in pain or not. The other sign is often panting - but it's been warm many days (and even warmer in our bedroom) so I can't tell if he's hot or actually in pain.
He's been on once a day metacam and twice daily gabapentin. I can up the gabapentin if needed (per the vet) which is what I did yesterday. Today I went back to his normal dose and will see how he does. I also have trazadone if he's tooooo active to help chill him out - been using it occasionally but not often. I'm anticipating that will be more needed as he gets more and more comfortable.