Tired of family saying

Then go to the doctor!

Perhaps you should take a more direct approach and just tell your family you want more attention from them and you are using "health concerns" as convenient (and common) tool to get that attention.

I assume you're under a doctor's care?
If not you need to be for any physical ailments.
If your age group is correct you don't need somebody else telling you whether you need to get medical care or not?

Maybe you need to listen to them.

Go to a doctor

That's called toxic positivity, and it's presented as a good thing, but it's not. People who just say that over and over, what they're saying is they don't want to deal with you when you just can't. They don't want to deal with the real emotions you experience. They just want you to smile and shut up.

sounds like you need a therapist