Apparently he has an uti due to stress, which is weird because: utis don't happen because of stress, and men have a lower rate of utis because of their physiology.
It would make so much sense if he had an ulcer, because: ulcers and most grastro issues are created due to stress, and they're fairly common. Like, he could be puking blood due to stress, and it would be as shocking, but more realistic. It could also be a good plot point, as it would address the fact they don't eat properly due to lack of money and space.
It just seems weird to me to use a uti.