All the best. Try to relax & be an observer to it all if you can. Somehow skipped a formal assessment myself as so many records were passed over to the doctor who Dx'd me, in addition to many regular visits, but they're a doll, and am very sure they're ADHD also, just with support from earlier on.

Remember, the depression & anxiety may stem from trying to live with ADHD, or be separate things.

Meds: a revelatory help, yet not a silver bullet.

Go in to learn more about yourself, no matter the outcome.

have you tried earplugs or headphones during daily life? regardless of a diagnosis, I've found them to be helpful to make day to day activities easier.