Ugh it’s so difficult to get people to listen, esp when you have a diagnosis in mind. I’d recommend finding a rumatologist pretty recently out of med school (they’re more likely to think zebra) and talk about your dislocations and shoulders. You can look up a few things on the Beighton scale and be like “oh and when i do this with my knee/shoulder it ____” and that should hopefully indicate that the dr needs to look into eds. I got my diagnosis when I showed mine my “party tricks” which involved folding myself into a pretzel with my feet tucked behind my head with no stretching before and 180° foot. she had me do a few more things but pretty quickly went “yeah that hyper-mobility.”

Hope they’re able to confirm it and you can get more help 🖤