Is his embarrassment worse than his physical pain was?

[Kimmy_The_Mommy]

i was in selfdefense class with my son (17), where we had to hold us by the arms, and try to free ourselves from each other. he started kicking my shins, so i raised my leg and swung my foot up between his legs (before class, i gave him the protection devices that i told him were NECESSARY and REQUIRED). he didn’t move, so i kicked a second time. then he started to moan and doubled over. i realized he wasn’t wearing a cup, which totally shocked me, and i apologized. i helped him up and seated him on a bench, where i held his hand and told him to breathe deeply. i tried to relax the situation somehow, saying ”honey? still a chance for me to become grandma?”...i laughed about my own stupid joke, but my son stammered "mom, i think my balls are broken", and i felt terrible.
later i took him to the doctor. she said he was fine and that his testicles have a swelling, which causes a "pounding" from the inside of his testicles, and that's what causes his pain. 2 days later he felt fine again.