Don't remember the MC in this one being hospitalized, but maaaaaaybe it's Endowed?
https://f95zone.to/threads/endowed-v0-3-3-expanding-universe-games.63328/
MC inherits a club (with a few strings attached). Has a tiny dick at the start, stumbles across some pills that make his schlong grow, and has a side effect where his jizz starts making women bustier if he cums on their chest.
Only one I can think of off the top of my head that's close to your description.