Wow, this is very, very relatable. I also have a chronic illness and it took years before I got an official diagnosis. The "You're just imagining it"title is such a good idea!
I hope you can take it slowly and get better.
I happen to be a Japanese/English to French Translator, and I would love to make this game available to a French speaking audience. All my info are on my itch.io profile page, so by all means feel free to reach out if you're interested!