It's only natural to be worried! I'll never forget how I felt when Toto had her spay and baby teeth removed. She came through like a champ ... I held her for about 54 hrs. without sleeping, showering, etc.!
She was fine and snapped right back to her old self without any after effects ... we, on the other hand, took much longer to recover!
I will be praying for little Preston and for you all as well. Please update us ... give him hugs & kisses from Toto and me.