I remember being back at school a week after I had my tonsils out. It was painful though. I lived on jelly, ice cream, mashed potato and yoghurt for a week which was great for me at the time . My mum had hers out in her 30's and had the worst time recovering.

Your DS will be fine, it's the best thing you can do for him if he's always getting sick. Hope all goes well for you.