My 11/12 year old beardie was treated for an abscess by lancing it, and now twice daily application of 1% silver sulfadiazine cream & an inter muscular injection by me every 3 days of 0.1 ml ceftazidime. Today he moved during the injection & there was a bit of blood at the site. Did I miss the muscle? How bad is this - should I be worried? Also, the vet is recommending surgery to remove what might be left of the abscess after the round of antibiotics. I’m hesitant. Thoughts? TIA