I am sorry for the situation you are in Waves.
I am so glad you attended the meeting and spoke up.

I do wish, as you do, that the interaction with your parents didn't have to happen.
I think your parents saw the 'different', extrovert you, and (your mother specially) jumped to conclusions.

Parents tend to be hyper - over protective. With you being unwell so often, perhaps they just look out for any indication that you may not be feeling well.

I am not familiar with your family dynamics and I could be dead wrong, but I was just thinking - my daughter has OCD and is on medication - I am always watching out for symptoms, and hyperventilate even if she speaks a sentence twice.

I am sorry if I am speaking out of turn, but if you let them know that your being active and involved means that you are feeling well, they may feel reassured.

BUT, know that what you were able to do that day was remarkable. Truly.