I'm always amazed at how stoic the boys try to be about so many things. I also know what you mean about being the one on the verge of tears. I keep stressing out about S2 & S1 and what they might not be processing -- like I need to make more things to worry about! I'm trying to learn to not impose my own feelings on the kids - to just take at face value what they are doing and not attempt to over analyze. I'm horrible at that -- not over analyzing -- but I'm trying.
I hope your DS's stitches heal quickly. Often stitches do really quickly, and then your son will have a "cool scar" to show everyone.