Oh, my gosh, I feel so sorry for you and your poor little guy! I can't imagine him having to suffer some kind of bug and throw up along with just having his tonsils out! I sure hope he starts feeling better soon. Did the doctor suggest any other kind of pain reliever for him? I would imagine if he's only able to take regular Tylenol, that he must not be getting the pain relief that he should be getting. The dehydration was probably really hard on him too. I really hope this is over for you and him very soon. It's so hard to see your kids in pain.
My daughter just had hers out this past Monday, Aug. 1st. Today is day 7, and she claims her throat feels worse today than it has so far. Her ears are bothering her a lot too, although she says the right one hurts far worse than the left. From all I've been reading here, it does seem as though from somewhere around day 5 to 8 things do feel worse before getting better.
Her doctor did her tonsillectomy "the old-fashioned" way, as he put it. He said he feels the recovery is much less painful that way. She was prescribed liquid Roxicet and liquid amoxicillin. A couple days ago she was complaining about how swollen her tongue was and that it was numb. I called the doctor and was told that that was probably an allergic reaction to the Roxicet. They switched her to a generic liquid Demerol. She is doing pretty well with that. I have been giving her the pain medication every 3-4 hours, depending on how she's feeling. I have been setting the alarm to get up in the night so that she wouldn't miss a dose. They told me that was very important. Apparently if you miss out on that medication overnight, you will have a hard time bringing the pain under control after that.
She actually has been able to eat right from the start. I bought lots of popscicles, soups etc. She has had macaroni and cheese and ramen noodles. I was really surprised as I expected she would not be able to eat anything for days. She's been laying around and resting, but overall I really expected a lot worse.